Malicious PDF — malware analysis report

Static analysis result for SHA-256 7379446cb477537c…

MALICIOUS

PDF

70.5 KB Created: 2021-02-19 16:38:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: acef0da6647f5f60da556ef1bb9448f1 SHA-1: 20bb0419083e82a55bd9e58810b2b525e6da75bd SHA-256: 7379446cb477537cab16ec64b661d217083720fc4267a75cac60fb70b026e1a8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=velozes+e+furiosos+8+filme+completo+dublado+em+portugues+assistir In PDF document text
    • https://static.s123-cdn-static.com/uploads/4367920/normal_5ff4a1b85fb12.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/jhLZlhe/78018024953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425229/normal_60201c5601c65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484805/normal_5ff67832522b0.pdfIn PDF document text
    • http://sokinabunerir.iblogger.org/68244712011.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/dZCWOIm/sipod.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/gfasXiQ/43270646999.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nilafafakem/html_form_target_new.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/49718728219.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/77748904457.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/25499924931.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/media_creation_tool_windows_10_usb.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/20182044104.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/free_curriculum_vitae_template_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/9209486751.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FC 5600 bytes
SHA-256: 1f7dc796a98c30798065c44057e1dbcdcd92dc4c5fd52824162210d6d435af9f
font_01_sfnt_off0000da0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0F 11544 bytes
SHA-256: bfa15c25b5ae6aa79c4ae0ebdb70f6142306588a39f471fffda0d64ae59a0982
font_02_sfnt_off0000fde2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361