Malicious PDF — malware analysis report

Static analysis result for SHA-256 4580bbd40ff21769…

MALICIOUS

PDF

39.5 KB Created: 2020-08-19 07:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3c4011846acecc77d6e920d678af391 SHA-1: 761db3c7a1c24de1e2e3fe83de07bbba49d6c8e5 SHA-256: 4580bbd40ff21769ccaba5d2a0803f7963b5a08ffc6c113686f3b1e027738a3b
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This, combined with a PDF link farm heuristic, indicates a malicious intent to redirect users. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF filenames, suggesting a lure. The presence of urgency language further supports a phishing or scam attempt.

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.cc/pify?keyword=coliform+home+test+kit In PDF document text
    • http://bagakivu.teniolaodumakinde.com/uploads/1/3/1/6/131636648/9425541.pdfIn PDF document text
    • http://dakuwidoz.fitzone11.com/uploads/1/3/1/3/131398360/6571192.pdfIn PDF document text
    • http://sogurotuf.themojoradioshow.com/uploads/1/3/2/7/132712072/gurusakozopinaw.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/1/0435/5486/5320/files/lifevemumisosamofowenesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/anatomy_of_lower_limb_bones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/how_to_download_udemy_videos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3661/9431/files/comment_apprendre_le_franais_facilement_et_rapidement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/risiperu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/borez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/hindu_calendar_2020_november.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/60836397564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2324/4191/files/kupazunemaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0956/3029/files/16_degrees_43_minutes_north.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 2

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_off00005d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D48 4768 bytes
SHA-256: f09310cce424bc40f73c6a5bab8d45802002ed64c08bc25fd209dea77bf293e9
font_01_sfnt_off00006d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D53 10604 bytes
SHA-256: 26fbf32bcd178362eac4549ffee143f8a8bf2ba0b9d404b9b06fc3862e2574c5

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