Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acbf1711cb491cf…

MALICIOUS

PDF

46.4 KB Created: 2020-08-11 07:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0160e779d55f0fd2f1634e955e44aa6a SHA-1: 4083e5d2c121677ea08d4184f32e822ae9ae9586 SHA-256: 9acbf1711cb491cf30d8b2ef5f04ad82e6b23feae7cf4bbcc98f47fce64f732a
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments and a URL that suggest a lure for a free PDF, likely leading to malware. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure.

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.ru/pify?keyword=busting+loose+from+the+money+game+free+pdf In PDF document text
    • http://wonesasit.jorricmatthews.com/uploads/1/3/2/3/132302780/c8e55b1c.pdfIn PDF document text
    • http://files.oshadows.org/uploads/1/3/1/4/131452858/xudajise_lulolunos.pdfIn PDF document text
    • http://files.hornadaybsa.com/uploads/1/3/0/7/130740368/3aacf28f12.pdfIn PDF document text
    • http://files.marhamchurch-pc.gov.uk/uploads/1/3/1/4/131408942/4510244.pdfIn PDF document text
    • http://mijojupu.jasbinderbilan.co.uk/uploads/1/3/1/0/131071157/0cff627a6d8.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/1/0435/4077/5064/files/tibigade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/69145866096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/zamerogog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5339/6647/files/jumemowefokegorubujoguso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nowivozepax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/88095641206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8444/5864/files/57120338019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9843/7784/files/zidusemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7928/5401/files/faboderapugadubera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4094/8892/files/guzumof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/lakev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/rukiselaropudabi.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_off000074f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F6 5604 bytes
SHA-256: 561a585d48ed3beb6815f789be385418c4fdbe0e9e0f467caa1451dd9f82da93
font_01_sfnt_off000087dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 10256 bytes
SHA-256: da83785dee2195cf93a21e64aebc52f35bcb7064c22ab822b72f548ca30bbddb

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