Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c06b21358a7dd4…

MALICIOUS

PDF

46.4 KB Created: 2020-07-31 15:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eeef1f5cfcc541bb895c0efd56a8595d SHA-1: 7dcaf93d1431251fb73f069f3f042c5ac3bbbb7d SHA-256: 92c06b21358a7dd408fdb22a57c6e6595779e724ab37a14c397d5db941025e2c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector (ttraff.ru). The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of numerous links suggests a lure to external, potentially malicious, content. The primary attack pattern involves redirecting users through a link farm, likely for SEO poisoning or phishing.

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.ru/pify?keyword=mood+examples+in+literature In PDF document text
    • http://files.wasbc.net/uploads/1/3/0/7/130739740/860124f.pdfIn PDF document text
    • http://files.louisescott-bushell.com/uploads/1/3/1/3/131379801/7389591.pdfIn PDF document text
    • http://files.rivertothesky.org/uploads/1/3/1/0/131070011/bonaw.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/1/0435/8157/1227/files/fogowitikapezilife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/gapiwunirikinuramodefifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8071/8238/files/vugiteda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3427/1126/files/vuburaropawotegajejapele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/mokaluvatogixuravilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7518/2485/files/50889151385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9635/6504/files/14364513583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/xojawizomukufuzawop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1079/files/wabokoporekebubuzefulozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2809/4882/files/82576806965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/godesuguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/94113838592.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 7

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_off00007937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7937 5060 bytes
SHA-256: 8b1afc1c64b18ff86ef797645a96abfb3761e9877afe1183029fe51ed3db45b2
font_01_sfnt_off00008a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A54 10064 bytes
SHA-256: 19fb5fa6cc9473f1765a5cf630484167e3dfebedc6038bdf1fa866c0b1e5f604

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