Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8d36174c6c95c9…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 19:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 996e3fb076406dc05771ef30efe5c98d SHA-1: 34709696b2a2c7f257937b98eb57b4577f0699ab SHA-256: ca8d36174c6c95c98e83903b27896a8988ef1ccefafcaf09697ad711e89eeca3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a large number of external PDF links indicates a link farm, likely for SEO poisoning or to host further malicious content.

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.com/pify?keyword=coronavirus+canino+pdf In PDF document text
    • http://dedomirof.drchensacupuncture.com/uploads/1/3/1/4/131437657/7ffd4.pdfIn PDF document text
    • http://tupipa.healthlinc.org/uploads/1/3/1/3/131379578/zexavabe-pibasexuk-mujumodap-wazujuwadusi.pdfIn PDF document text
    • http://files.chrisbikes.co.uk/uploads/1/3/1/6/131606407/032f4d1d05f10a.pdfIn PDF document text
    • http://files.fgcschool.org/uploads/1/3/1/0/131071127/9ff573257d5748.pdfIn PDF document text
    • http://files.meowmeowpowpowlit.com/uploads/1/3/1/4/131483143/3849451.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/1/0431/5106/5243/files/67928719068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53151925343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/54348736849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/54023076956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/vepafubenazesapogajid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/momotatul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/53340703704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/bank_appointment_letter_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/26359051755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/punafaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3935/files/94370239844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/busogebaxapokosebasuboxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8067/9577/files/pugazadod.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 5

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_off00006450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6450 5080 bytes
SHA-256: 84bc990c5ea5e428f3e339150057c8019e5518be5a2e8e9bb53640ee2731073b
font_01_sfnt_off000075ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AC 10296 bytes
SHA-256: f81dbf87c4fa3d802aca72eb6648b8fabd8fdeaf4f2a1ad901106ed473073516

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