Malicious PDF — malware analysis report

Static analysis result for SHA-256 72639b4ff2e79f85…

MALICIOUS

PDF

292.4 KB Created: 2022-03-18 00:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-11
MD5: 46371c5fd49a90dab28809ec80e80c12 SHA-1: 9bbf7b821a9ca80d4bdcb3ac0a3865fd67c425ed SHA-256: 72639b4ff2e79f85b5daba5465766d691f13c8e74b0886e40989e5b5f8fa6403
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8500

Heuristics 6

  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://loheb.co.za/XSRYdR1H?utm_term=hungry+shark+hacked+apk PDF link annotation
    • http://newgoodluckcrane.com/admin/uploadfiles/file/luzajofijovukugi.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/mopifositewatozulipat.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/162170160b0611---53004046856.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/5424c080191de9b24111ae1981ef504d/47111501193.pdfIn PDF document text
    • https://literie-depot.fr/UserFiles/file/folanojukipavoge.pdfIn PDF document text
    • http://savytrading.com/userfiles/file/juxizaxigonumeniwos.pdfIn PDF document text
    • http://royal-pizza.eu/files/file/46368322200.pdfIn PDF document text
    • http://jewelry-shopping-city.com/uploads/files/202203160518257875.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/duwomuwonepu.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/tesumofuk.pdfIn PDF document text
    • http://mwbright.com/upload_fck/file/2022-3-7/20220307031844472831.pdfIn PDF document text
    • http://www.itidharamshala.in/images/uploads/files/45000234877.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/1bcf5b0a3ff879e2db62cf20a432ad4f/80266347208.pdfIn PDF document text
    • http://www.nbc.com.vn/ckfinder/userfiles/files/32657772287.pdfIn PDF document text
    • http://lafedja.cz/public/file/15132030036.pdfIn PDF document text
    • https://helicopterleasingservices.com/userfiles/files/66294822148.pdfIn PDF document text
    • https://pasationtravellers.com/root/FCKeditor/file/ranedugenamakenumevajiri.pdfIn PDF document text
    • https://aelma.com/sites/default/userfiles/file/66119942538.pdfIn PDF document text
    • https://lixtech.com.tw/ckfinder/ckfiles/files/84212453996.pdfIn PDF document text
    • https://ucknef-basket.fr/images/files/39518504951.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
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00042459.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00042459.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42459 18076 bytes
SHA-256: b3a52c6706b25f017d36e49daddbb0a7bb7ee97bbe849249db4b2ffc230a6128
font_01_sfnt_off0004539b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4539B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00046abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46ABB 10736 bytes
SHA-256: 5c9f92ead618b6020a93c2330e7ac8a43e3c58f698e6606c4331e69b6f563cba