Malicious PDF — malware analysis report

Static analysis result for SHA-256 b969e39be8ccc075…

MALICIOUS

PDF

52.5 KB Created: 2020-08-22 00:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 787662d9e1518e7fa59763abdf24b7c1 SHA-1: 24f81870cddcf30511e857b1e3cff468232afc50 SHA-256: b969e39be8ccc0751ac26531d250fc9c66c2a66c5605f312afb12fa82543e774
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to auditing and accounting, suggesting a lure to disguise the malicious intent. The embedded URLs are likely intended to lead the user to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=auditing+computerized+accounting+information+system+pdf In PDF document text
    • http://files.earnbetterfitness.co/uploads/1/3/2/7/132740413/vekifawixuza-kisugalolulol-zoxemibufobu.pdfIn PDF document text
    • http://kafale.wsdar.com/uploads/1/3/1/3/131379530/5840361.pdfIn PDF document text
    • http://files.baonenterprises.com/uploads/1/3/0/8/130813804/lurib.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/1/0427/6230/5702/files/763442219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/13955141918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/mapelazidinawubumepajivaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/25805148301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/85579056926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5765/0584/files/kenmore_he2_plus_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/loligawapazipawafeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5180/0981/files/pamez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/wuxuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B3 5584 bytes
SHA-256: 394ca73f9b0cfa1906cca8d94e3b47ee78b8e8f0cafb330f013b8aa96ff46302
font_01_sfnt_off000099a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99A2 13840 bytes
SHA-256: f959786cda3478bf2cd258f45f1c173e7ad8d231598a55c773c60be8e51e964c

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