Malicious PDF — malware analysis report

Static analysis result for SHA-256 3296f4eba58e95b1…

MALICIOUS

PDF

36.4 KB Created: 2020-08-08 18:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b4c48e327d764b6d78069f6fe18d447 SHA-1: 7550c5cee8f093549264b106134a2fd9240f3f5d SHA-256: 3296f4eba58e95b10915bee314394dcf5fb5407a1f17fdce1231dc88ed9c4f1c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a link to known malicious redirector infrastructure. The document body contains the malicious URL, suggesting a lure for users to download potentially harmful content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.cc/pify?keyword=talley+clinical+examination+pdf+free+download In PDF document text
    • http://files.communityspokes.com/uploads/1/3/1/3/131379099/nufalirofado_wenogopopi_pipilosop.pdfIn PDF document text
    • http://files.ntfbiac.com/uploads/1/3/0/8/130813973/reped.pdfIn PDF document text
    • http://files.racheldmark.com/uploads/1/3/1/4/131453486/pixobagi_fotosabesunibol.pdfIn PDF document text
    • http://bebimilig.olygarfieldpta.com/uploads/1/3/1/6/131607600/tekuponosoradud-nanikoreda.pdfIn PDF document text
    • http://files.cfcstuttgart.org/uploads/1/3/0/7/130739495/61fe14292b26.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/1/0434/6635/8934/files/1037408827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7153/6290/files/convert_base64_to_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0894/2492/files/demonomicon_4e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/neologismos_en_el_espaol_actual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/xefovofazek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/51978628143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5767/5431/files/el_sitio_de_leningrado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/93855851516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/puxosaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6598/9530/files/59481656344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/email_examples_for_business_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/wewexafirudigamivezit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4103/7208/files/75818580463.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB4 5332 bytes
SHA-256: 63a57fec96aabacac1033c25bc69b278d3ac3b67fecdac7b909a4115ecd4ca20
font_01_sfnt_off000061e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E3 10164 bytes
SHA-256: 86928492c3ca21cbaf5b9cf77652a4a17f8854f9e13958ec8f86fa0c82b5b203

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