Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa771a43f7f2ec95…

MALICIOUS

PDF

53.1 KB Created: 2020-08-11 13:33:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e801da287355fb0280c1e7446d064c6 SHA-1: 0fdafe93852feb2389249b64aa92b697253af363 SHA-256: fa771a43f7f2ec95db95306e5368d8ce3c50f216fa5988935839dc42bc4e39e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or to distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=certiorari+and+prohibition+pdf. No scripts were extracted from this sample.

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=certiorari+and+prohibition+pdf In PDF document text
    • http://vubujus.vinodbharti.com/uploads/1/3/1/8/131856772/806f65d17e.pdfIn PDF document text
    • http://nawoxem.timapplegate.net/uploads/1/3/0/7/130775045/2526713.pdfIn PDF document text
    • http://biwakiv.fiskeelectric.com/uploads/1/3/0/7/130776485/3692141.pdfIn PDF document text
    • http://files.aallformsoflife.com/uploads/1/3/2/6/132681634/55c437e598f.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/1/0430/9798/1089/files/34198079581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/attach_pic_to_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/biacore_t200_getting_started.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0609/1687/files/85954124812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9212/2527/files/7461261495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/senetuxatuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/situkofozimonakelikisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/vumeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/12481668335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/petufunigukifovomunabiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5795/4467/files/exercises_present_perfect_affirmative_negative_interrogative.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0225/5770/files/geligikiv.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 3

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_off000093d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D4 4964 bytes
SHA-256: 6702f18340745efeaf89f7b3d862f15faad0e9fb3231d818b33ba0666f4f432b
font_01_sfnt_off0000a4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A7 10172 bytes
SHA-256: 6dc2f3598f0c3fe5a859f3b072d33c34c53495358666e4bb0efa5ffa72d70504

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