Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0b3c585f488a1e…

MALICIOUS

PDF

60.3 KB Created: 2020-08-01 17:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85f4c766496b14eff2e4bf395cf04261 SHA-1: c1da6e3956ebc71868d3e6ec0f565158fd2abd3e SHA-256: 1a0b3c585f488a1e8fab911ea6f64ca69f4537bf1bbf785249970bf7d823fdb8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=a+scanner+darkly+torrent'. Another critical heuristic indicates a link farm, suggesting an attempt to manipulate search engine results or distribute content widely. The document body, though heavily obfuscated, contains the aforementioned redirector URL, reinforcing the malicious intent. No scripts were extracted, but the presence of numerous links points to a delivery mechanism focused on user interaction with external resources.

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=a+scanner+darkly+torrent In PDF document text
    • http://files.leedsbarber.co.uk/uploads/1/3/1/4/131409508/d12b2.pdfIn PDF document text
    • http://files.missmurdysmenagerie.com/uploads/1/3/1/4/131407977/8999811.pdfIn PDF document text
    • http://files.mthschoirs.org/uploads/1/3/0/7/130776757/badebalusabujuxugodo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/52617219475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/92329675099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/xisijezir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/8489230218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/case_tractor_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/70008433166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/6576538791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/nebevusajoduwojotolex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9880/8224/files/60510407932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/71767731124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4719/7594/files/45586048471.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E61 4828 bytes
SHA-256: 502aa8ff9dd504b8cb3501c5acc006f737becb354ddf9793c8f5dc783567f904
font_01_sfnt_off0000aecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECC 11452 bytes
SHA-256: a1204ca460ae47f1c841da9a5e5406aca5b04cae2779f92cbea50f323f695208
font_02_sfnt_off0000d446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD446 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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