Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e09252216c0614f…

MALICIOUS

PDF

38.5 KB Created: 2020-08-24 22:20:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c7a1eece5498e05691f269df94dd0cb0 SHA-1: 2a0cfe6f1402e1e01b8a57cbf57e810b03b01179 SHA-256: 0e09252216c0614f44786795b7c03e4fe4554d687505e6c12b6ed57bce368bef
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ttraff.cc/pify?keyword=acronis+backup+12.+5++trial In PDF document text
    • http://files.eat3foldmobile.com/uploads/1/3/0/7/130775387/e51075332e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/cds_2_2019_answer_key_official.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/l_islam_et_la_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/4824/6952/files/51845187069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8925/5847/files/wuwev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1524/8794/files/free_party_invitation_templates_to_print.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/musifozezim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/tiwimajizetafirufeviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/baworijugofizufetakeromuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/bimeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9696/5269/files/kindergarten_math_common_core_standards_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/wokavixafomabenomazago.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_off00005949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5949 5460 bytes
SHA-256: 474352335441a12694ba4d8616168bc9ba6f0ad731e2c6a735b2a9c53b7eac74
font_01_sfnt_off00006bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEC 9872 bytes
SHA-256: af8e726f13971d29b3deb519229c509063caf5bcadd4e0054f49fbf7c14db8eb

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