Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc591fe43f57e4a9…

MALICIOUS

PDF

49.2 KB Created: 2020-08-05 11:38:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b670938cc459041749116d9291275b3 SHA-1: b9f42067fbe7f7dff3f2e8eaf7b5c27e16ad4a41 SHA-256: fc591fe43f57e4a90d68be282e79076ffaaa3d4b2c36a33db8bb8a318bed9668
194 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, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to obscure the malicious destination. The ML classifier strongly indicates maliciousness.

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=general+anesthesia+in+pediatric+dentistry+pdf In PDF document text
    • http://files.castironbrighton.com/uploads/1/3/0/7/130740524/9558521.pdfIn PDF document text
    • http://files.seatrunks.com/uploads/1/3/0/8/130814209/foben_gepezaledujig.pdfIn PDF document text
    • http://files.bryanadavenport.com/uploads/1/3/1/3/131398498/4c1fe46c6a9dc.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/1/0431/8068/7524/files/55397159103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/50102226821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/56106193567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8746/2551/files/effects_of_globalisation_on_developing_countries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/20304414770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/5029259731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/43377212562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1320/8224/files/auto_spare_parts_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/encoding_and_decoding_huffman_code_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/kuwodudomevegega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/pifukepaloramoxokapu.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_off000082f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F3 5376 bytes
SHA-256: bbd7890c50a1d606e3d6761499d353c1bd80cc0ed6c7b8b95390ce12e565c6a4
font_01_sfnt_off0000953e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x953E 10076 bytes
SHA-256: 8054a84c330290bd3f7cee0e8bc88a026e2d116fe9e96454ba73c3af8d9a9849

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