Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2a91f90773283c…

MALICIOUS

PDF

67.2 KB Created: 2021-02-17 10:54:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 813da87a65a276a5b68d2604f0e5f0bf SHA-1: a43faf89ffe9bfcb9072f5775d19f2d787e7e58b SHA-256: cc2a91f90773283cfa412a1fe018c47e3811a3ab3a04af7329bd4278cfc7fa9d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wb?keyword=how%20to%20get%20epic%20certified%20reddit PDF link annotation
    • https://femuketidoxesi.weebly.com/uploads/1/3/3/9/133997502/6361104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454430/normal_60206dce324b4.pdfIn PDF document text
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/34bbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_60250560b8544.pdfIn PDF document text
    • https://dekedenavit.weebly.com/uploads/1/3/4/6/134612093/bagare.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/fje2Nzj/87801934727.pdfIn PDF document text
    • http://palejep.22web.org/free_css_templates_for_college_website.pdfIn PDF document text
    • http://zuzitijimopa.22web.org/32070662132.pdfIn PDF document text
    • https://bapuporodotuxo.weebly.com/uploads/1/3/1/3/131381531/pajupuraw.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/bibTPjb/15062665012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447085/normal_5fda8b136d6f0.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/bejenosugede/80855064925.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/lelijafevanenuk.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/causative_have_get.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/bar_inventory_spreadsheet_template_free.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_off0000ccea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEA 4956 bytes
SHA-256: bfc41529e6c6dfbba13e9872cb6106141b7ceb07520babc983ae83c0ca9992ea
font_01_sfnt_off0000ddf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF1 9912 bytes
SHA-256: 3ad76e3505d423cb43be37a166e2839f7c7639cd87c9223d246b2c6781560187