Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3669d5b3fe91011…

MALICIOUS

PDF

48.4 KB Created: 2020-07-27 22:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 642d9b01f33fbd97ff25d3e3b10bdde2 SHA-1: 16c0ec22cd17113ecfee1d0a349d4d45eac19088 SHA-256: f3669d5b3fe91011b0261a22f81d5e0c545a3f803667c7c1f29b924fe8adc655
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The document body, though heavily obfuscated, contains keywords related to urgency and account termination, reinforcing the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.ru/pify?keyword=giffgaff+answer+phone+number+from+landline In PDF document text
    • http://files.zionnewville.org/uploads/1/3/0/8/130814353/8193101.pdfIn PDF document text
    • http://files.makeamarkfoundation.org/uploads/1/3/0/7/130775231/7416092.pdfIn PDF document text
    • http://files.denisemmain.com/uploads/1/3/1/3/131398091/3593117.pdfIn PDF document text
    • http://files.animationofmortality.com/uploads/1/3/0/7/130776043/7067629.pdfIn PDF document text
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.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/1/0429/6422/2101/files/23367477220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/48948132103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/18878258562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8724/1119/files/xelujozufejomevararime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7197/9171/files/69428544356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/25015172012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/76122350389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/fogewivole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/58503439667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/68013482393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5548/7905/files/bekajesunaguratixiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4809/2323/files/dukitotujadetipeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/wojifitasamelo.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_off000076ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FF 5520 bytes
SHA-256: 8e4839c6971f3ff2140356399344ab055114741686e5873660b5f16a8abbc33b
font_01_sfnt_off0000899e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899E 13052 bytes
SHA-256: 0085d738cbe1f83603555066a1b4e81172048bafaf0a34d227f4e62228cf7d6d

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