Malicious PDF — malware analysis report

Static analysis result for SHA-256 9139cb23d7ffe408…

MALICIOUS

PDF

48.6 KB Created: 2020-07-31 09:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86a773c26e4dd4fb01e19eca6d1b4d19 SHA-1: b9268162f41631a3b36c5bbf8b2ad74cfaea1e7d SHA-256: 9139cb23d7ffe4082f7e5b240ac0365908bb3767e26eb222b3d41826d3c0e766
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but ultimately redirect to the malicious domain 'ttraff.cc'. This indicates a link farm or SEO poisoning tactic designed to trick users into visiting malicious infrastructure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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.cc/pify?keyword=tablas+de+atmosfera+estandar+pdf In PDF document text
    • http://files.bluewatercopperworks.com/uploads/1/3/0/7/130775465/digejadez_geperix_mukulekadove.pdfIn PDF document text
    • http://files.tallonresearch.com/uploads/1/3/1/3/131398094/mijenisi.pdfIn PDF document text
    • http://files.suburbandetectiveagency.com/uploads/1/3/1/3/131380052/3257553.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/1/0431/7665/7051/files/65467755126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/sefegizibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9815/files/32855094130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/gamobaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/xuzoloxusigominomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6401/6539/files/22740067654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/31345405526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/64956549334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0237/9939/files/36759461393.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 1

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_off00007512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7512 5016 bytes
SHA-256: 8c3d54566256b169fcd7d7ca0dfdf1e36070eb02c081441370c2dc58e161a5c5
font_01_sfnt_off000085f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F8 14988 bytes
SHA-256: c03b2e9ec581a37f292765e1271bcb198d5f64317d524bf9ea979f39e3fd3647

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