Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87cbfc6d2aa1afd…

MALICIOUS

PDF

78.3 KB Created: 2020-11-26 00:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 12475ea37b9aebbc22c7f3a601f13ccc SHA-1: 8beab8b8e367ca6e1e0a771c6730b4573cdaa9b0 SHA-256: f87cbfc6d2aa1afda6dadfd0c4c207b107a5ee8e83b03ef99f35a075134438fb
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffking.ru/wb?keyword=chillerama%20tamil%20full%20movie In PDF document text
    • https://tomojuvugitem.weebly.com/uploads/1/3/4/4/134475437/6244322.pdfIn PDF document text
    • https://gotumofavi.weebly.com/uploads/1/3/4/6/134602885/6543244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5fb5b8c1a76fa.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/jugogepebelulog_xeleja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387430/normal_5f8fe756e6c15.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/tiluwisulepam/kossan_rubber_industries_bhd_annual_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/amerimax_85198_gutter_guard_installation.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/venitimit.pdfIn PDF document text
    • https://s3.amazonaws.com/gonavo/86330479976.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/zatokivovejexi.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/vawebazupipumati.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/27132235739.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_off0000e79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79A 4688 bytes
SHA-256: 2c6c44bc5dc1e8cbdec999947cd49843d0cafb5113bf8382d57d435d70dd6496
font_01_sfnt_off0000f794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF794 11472 bytes
SHA-256: 305c9ee22c23257de4448ae890d3158f3dd9019d25f26e410ee9940efa547bf4
font_02_sfnt_off00011e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f