Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc0c94ae221a576…

MALICIOUS

PDF

69.3 KB Created: 2021-02-13 10:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e01cbb779cfd0fba34ad2794cfd64b2d SHA-1: 418afe541ea5c1d6dd6f204c3e0633b5ace127eb SHA-256: 8cc0c94ae221a576b06eaa58c947092580afa6b91de5ba19024fe9c22cd7b918
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/123?utm_term=register+for+spring+2020+pgcc PDF link annotation
    • https://cdn.sqhk.co/tuledapozato/ahbgjCF/49394849196.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/gDS5jXc/pearl_su_stickers.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/lEjhjjW/happy_jump_game_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420230/normal_601f1157f3ef4.pdfIn PDF document text
    • https://cdn.sqhk.co/dewozoju/cggShja/65496024530.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/l5xhiWP/90522143594.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_5ff1236e894cd.pdfIn PDF document text
    • https://cdn.sqhk.co/gafokoru/9hhjdhd/candy_crush_saga_level_532_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/83pijdy/67922928349.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/jihdjgP/draw_color_and_sticker_nature_sketchbook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/netinuwa/mewefatigiparukidekupinig.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/22050568388.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/juwalifusatekokoxisonab.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/vekipokigukuximigefamib.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/elgato_game_capture_hd_manual.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD189 5224 bytes
SHA-256: f12c2aaefec86186455a0282285f551ec733a5b72c305f59808bf6c65324ed2f
font_01_sfnt_off0000e374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE374 10900 bytes
SHA-256: df7004069c2b1e5584d2d9fd0fca4860a7e771e88d6ca710944e1b33908283f3