Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a94bfce8cc445d4…

MALICIOUS

PDF

120.8 KB Created: 2020-08-06 08:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80c9516762dbe65c1be68179e96941a5 SHA-1: 4d699f4580223405f66ea6623a9a2dec8df8ef1d SHA-256: 6a94bfce8cc445d4d12c893201d49babdeffc2c9b4f23282653f29d3f38d05ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com), indicating a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious. The presence of a redirector link suggests an attempt to lead the user to a malicious site, likely for credential harvesting or malware delivery.

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=livro+genetica+thompson+pdf In PDF document text
    • http://files.eighttreasuresyoga.com/uploads/1/3/2/3/132303001/4876700.pdfIn PDF document text
    • http://files.caricaturedcvamd.com/uploads/1/3/0/8/130814340/8d2393a.pdfIn PDF document text
    • http://bunovura.earomi.com/uploads/1/3/1/4/131407241/8393224.pdfIn PDF document text
    • http://files.rebeccaocainlaw.com/uploads/1/3/1/6/131606552/migisukijobal-bakuwidodopu.pdfIn PDF document text
    • http://vixope.stressfreesettlements.com/uploads/1/3/1/4/131408100/nekizimezewiduf.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/1/0428/5782/4419/files/fidapadafelopekizufaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/60749793100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/toby_tab_manager.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7626/3841/files/37989600263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6201/8727/files/814199537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/biography_of_lord_krishna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/fovokapidapexubira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/livimuwedodekusesoxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/dakipegalukakafajetagemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/80182324038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/fodugipadisupupafif.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 6

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_off00019137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19137 5536 bytes
SHA-256: 39745bceaccc7b8dc99c44ee7bfcb7773c7d7be34c8f7de7dbb5d38c823e3a73
font_01_sfnt_off0001a3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3F2 15036 bytes
SHA-256: 2e0a8bca121ce79add29b3b0a96727b6327df97c787b912fbf634b7d5c9c2057

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