Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48a996f045bbb54…

MALICIOUS

PDF

334.1 KB Created: 2022-06-06 02:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: fd7a73bc788d5978d001686229f566e0 SHA-1: 0219f6bfa1a618d9d86cd17cec14e4a50e4dfb71 SHA-256: a48a996f045bbb54c4e90819283cd50832e729358a214cdd18b726d4141253a0
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-confidence heuristic firing for a redirector link used in phishing lures, specifically pointing to a 'free-download' theme. The embedded URL, https://fecuq.co.za/XSRYdR1H?utm_term=minecraft+joules+to+rf+types+pdf, is the primary indicator of this malicious intent. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it is designed to trick users into downloading further malicious content or visiting a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5053

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fecuq.co.za/XSRYdR1H?utm_term=minecraft+joules+to+rf+types+pdf PDF link annotation
    • https://tipuzinugex.weebly.com/uploads/1/3/2/6/132682040/kekokopiwolunenexi.pdfIn PDF document text
    • https://tilapateve.weebly.com/uploads/1/4/1/2/141292087/22010ae754.pdfIn PDF document text
    • https://bursac.net/userfiles/file/34864862874.pdfIn PDF document text
    • http://change4best.ru/upload/file/wukigepul.pdfIn PDF document text
    • https://kosofisipituje.weebly.com/uploads/1/3/5/3/135329454/3900382.pdfIn PDF document text
    • http://christopherdallo.com/file/xorokagajogatavetu.pdfIn PDF document text
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/af7b913e.pdfIn PDF document text
    • http://nachhilfeschule.havonix.com/ckfinder/userfiles/files/pelotunipemejupipebu.pdfIn PDF document text
    • https://lumarize.weebly.com/uploads/1/4/1/2/141251472/rufix.pdfIn PDF document text
    • https://kilobabax.weebly.com/uploads/1/3/1/8/131856311/sapatavesaruk_mexagines_jozawopiwak_xipobiwepufef.pdfIn PDF document text
    • https://lirukasuk.weebly.com/uploads/1/3/0/7/130739032/22b0f2817b6.pdfIn PDF document text
    • https://delmadang.com/userfiles/file///28944131864.pdfIn PDF document text
    • http://quangphong.vn/uploads/image/files/50537759105.pdfIn PDF document text
    • http://weforyou.it/userfiles/files/78736655592.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202202241452093751.pdfIn PDF document text
    • https://bigifami.weebly.com/uploads/1/3/1/4/131407708/detafipajaxowikab.pdfIn PDF document text
    • https://vasabofilusav.weebly.com/uploads/1/3/4/5/134585229/risikufo-migiberusezejif-dopaxagegojike.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/gaxov.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/zeliluturasubuxelumopulos.pdfIn PDF document text
    • http://kochi-east-rc.com/admin/kcfinder/upload/files/78458188675.pdfIn PDF document text
    • https://vowimusu.weebly.com/uploads/1/3/4/6/134655535/lejexolafop.pdfIn PDF document text
    • https://jaxifojuw.weebly.com/uploads/1/3/5/3/135351184/jakifakarumow-dixobejez-vojoronebu.pdfIn PDF document text
    • https://putukaxuke.weebly.com/uploads/1/3/1/4/131437363/6351146.pdfIn PDF document text
    • https://danisisupiw.weebly.com/uploads/1/4/1/5/141549638/revejetu-mororapuriron-lunoweladore-jewizimafatewed.pdfIn PDF document text
    • https://fofomakizu.weebly.com/uploads/1/3/0/7/130775640/sizot.pdfIn PDF document text
    • https://viboot.traigiongthuha.com/ckfinder/userfiles/files/82281320864.pdfIn PDF document text
    • https://isped.cz/kcfinder/upload/files/59144661922.pdfIn PDF document text
    • https://butusokusumowa.weebly.com/uploads/1/3/5/2/135294155/f2a6806313f6.pdfIn PDF document text
    • http://recentitsolutions.com/userfiles/file/99832457791.pdfIn PDF document text
    • https://ketokaxuvora.weebly.com/uploads/1/3/1/8/131856042/xafisexox.pdfIn PDF document text
    • https://bibeluwevolaru.weebly.com/uploads/1/3/4/4/134497964/fapizemuvas.pdfIn PDF document text
    • http://canlook.ru/userfiles/files/jizazifolikebakobamuk.pdfIn PDF document text
    • https://serudifatu.weebly.com/uploads/1/3/5/3/135324897/609316.pdfIn PDF document text
    • https://bowonusafepa.weebly.com/uploads/1/3/4/3/134319531/4082783.pdfIn PDF document text
    • https://dutebosolet.weebly.com/uploads/1/3/0/9/130969562/vinipali.pdfIn PDF document text
    • https://govaxafazem.weebly.com/uploads/1/4/1/5/141510821/9e2eb5e.pdfIn PDF document text
    • https://rudoliretumuw.weebly.com/uploads/1/3/4/8/134861944/pakod.pdfIn PDF document text
    • https://frischgeschluepft.de/kcfinder/upload/files/21666031062.pdfIn PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/6192282.pdfIn PDF document text
    • http://alefart.ru/admin/ckfinder/userfiles/files/zomuvar.pdfIn PDF document text
    • http://ain.proximeo.com/ckfinder/userfiles/files/dinanugizutijovaw.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16272a1ca99e4b---madiguvuzefobarupuzuduled.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620624df93ea1---vuduladubowumaxixus.pdfIn PDF document text
    • https://www.todra.com/admin/ckfinder/userfiles/files/71492554988.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    +3 more URL(s)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000462c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x462C5 18644 bytes
SHA-256: af1469b662b89254c283670c93a4c4dea342ce1633db39ff55e7c9011783cca9
font_01_sfnt_off00049375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49375 35420 bytes
SHA-256: e0829a2545ad1395e6a0dbc90cfdbb7d167ce23d319a6adc8bebf43ccf398e9a
font_02_sfnt_off0004f5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F5D3 10948 bytes
SHA-256: ebc02319ea2d908bfaa89228dd9ba2b876348f9eefb810152b922c125b74f4aa
font_03_sfnt_off00050f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F5C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1