Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9f20971cfd6ac1…

MALICIOUS

PDF

37.8 KB Created: 2020-08-01 17:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6479d60391826e223e49ea12d96cfafd SHA-1: 71d0f69fe15ea2c2da1323558ef5c05b7c76ea06 SHA-256: bd9f20971cfd6ac1a4db9735b255a922e7d9a7cbcff379f97b2b46ecdc611eff
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=less+mills+torrent', which is likely used to redirect users to a phishing or malware-hosting site. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a coordinated effort to distribute 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.cc/pify?keyword=less+mills+torrent In PDF document text
    • http://files.stressfreefurniture.co.nz/uploads/1/3/2/3/132303077/wewiva-pizekopabireg.pdfIn PDF document text
    • http://files.beholdfilms.com/uploads/1/3/1/4/131437005/rarovujaxikol_godula_sadefu.pdfIn PDF document text
    • http://files.balancingact-iamyou.com/uploads/1/3/1/6/131606231/4f2ef3b.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/1/0428/3957/2643/files/38930365049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/61256836049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7531/9448/files/soburejuxato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/juzagekupakavewadefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/ricardo_munoz_cbt_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6400/8610/files/zimaxigejijudoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0822/files/lisokijakalepalumiximun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/filo_actinopoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2135/1587/files/11030619345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/papixusisijipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/97317602913.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_off000057d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D7 4564 bytes
SHA-256: 00a6a48fbc5eeb563e682580a23e9d037ac2b9f4817dde86cce313682ef028e7
font_01_sfnt_off00006744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6744 10492 bytes
SHA-256: 7937ffd15fc6b1cea717f3e215ee7d0a2070ef1a79c8d2605e529be989aff1a8

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