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
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. ClamAV detection and ML classification further indicate maliciousness, specifically flagging it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to 'minecraft joules to rf types' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5053

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
    • https://tipuzinugex.weebly.com/uploads/1/3/2/6/132682040/kekokopiwolunenexi.pdf
    • https://tilapateve.weebly.com/uploads/1/4/1/2/141292087/22010ae754.pdf
    • https://bursac.net/userfiles/file/34864862874.pdf
    • http://change4best.ru/upload/file/wukigepul.pdf
    • https://kosofisipituje.weebly.com/uploads/1/3/5/3/135329454/3900382.pdf
    • http://christopherdallo.com/file/xorokagajogatavetu.pdf
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/af7b913e.pdf
    • http://nachhilfeschule.havonix.com/ckfinder/userfiles/files/pelotunipemejupipebu.pdf
    • https://lumarize.weebly.com/uploads/1/4/1/2/141251472/rufix.pdf
    • https://kilobabax.weebly.com/uploads/1/3/1/8/131856311/sapatavesaruk_mexagines_jozawopiwak_xipobiwepufef.pdf
    • https://lirukasuk.weebly.com/uploads/1/3/0/7/130739032/22b0f2817b6.pdf
    • https://delmadang.com/userfiles/file///28944131864.pdf
    • http://quangphong.vn/uploads/image/files/50537759105.pdf
    • http://weforyou.it/userfiles/files/78736655592.pdf
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202202241452093751.pdf
    • https://bigifami.weebly.com/uploads/1/3/1/4/131407708/detafipajaxowikab.pdf
    • https://vasabofilusav.weebly.com/uploads/1/3/4/5/134585229/risikufo-migiberusezejif-dopaxagegojike.pdf
    • http://ventss.ru/userfiles/files/gaxov.pdf
    • http://kagoshimakojintaxi.com/userfiles/file/zeliluturasubuxelumopulos.pdf
    • http://kochi-east-rc.com/admin/kcfinder/upload/files/78458188675.pdf
    • https://vowimusu.weebly.com/uploads/1/3/4/6/134655535/lejexolafop.pdf
    • https://jaxifojuw.weebly.com/uploads/1/3/5/3/135351184/jakifakarumow-dixobejez-vojoronebu.pdf
    • https://putukaxuke.weebly.com/uploads/1/3/1/4/131437363/6351146.pdf
    • https://danisisupiw.weebly.com/uploads/1/4/1/5/141549638/revejetu-mororapuriron-lunoweladore-jewizimafatewed.pdf
    • https://fofomakizu.weebly.com/uploads/1/3/0/7/130775640/sizot.pdf
    • https://viboot.traigiongthuha.com/ckfinder/userfiles/files/82281320864.pdf
    • https://isped.cz/kcfinder/upload/files/59144661922.pdf
    • https://butusokusumowa.weebly.com/uploads/1/3/5/2/135294155/f2a6806313f6.pdf
    • http://recentitsolutions.com/userfiles/file/99832457791.pdf
    • https://ketokaxuvora.weebly.com/uploads/1/3/1/8/131856042/xafisexox.pdf
    • https://bibeluwevolaru.weebly.com/uploads/1/3/4/4/134497964/fapizemuvas.pdf
    • http://canlook.ru/userfiles/files/jizazifolikebakobamuk.pdf
    • https://serudifatu.weebly.com/uploads/1/3/5/3/135324897/609316.pdf
    • https://bowonusafepa.weebly.com/uploads/1/3/4/3/134319531/4082783.pdf
    • https://dutebosolet.weebly.com/uploads/1/3/0/9/130969562/vinipali.pdf
    • https://govaxafazem.weebly.com/uploads/1/4/1/5/141510821/9e2eb5e.pdf
    • https://rudoliretumuw.weebly.com/uploads/1/3/4/8/134861944/pakod.pdf
    • https://frischgeschluepft.de/kcfinder/upload/files/21666031062.pdf
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/6192282.pdf
    • http://alefart.ru/admin/ckfinder/userfiles/files/zomuvar.pdf
    • http://ain.proximeo.com/ckfinder/userfiles/files/dinanugizutijovaw.pdf
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16272a1ca99e4b---madiguvuzefobarupuzuduled.pdf
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620624df93ea1---vuduladubowumaxixus.pdf
    • https://www.todra.com/admin/ckfinder/userfiles/files/71492554988.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    +3 more URL(s)

Extracted artifacts 4

Files carved from inside the sample during analysis.

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