Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a9eb945aacd965…

MALICIOUS

PDF

45.2 KB Created: 2020-08-27 14:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fe2dd45e5efb098a445d8a979385504 SHA-1: eb14e3c4e75c3159d33964c78d957fdb9d9c8908 SHA-256: f7a9eb945aacd96506a7af3f959a2c7217e5e1f0116c2c9d27cc9c55dbd6d3f3
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily obfuscated.

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=esquemas+de+mayor+formato+pdf In PDF document text
    • http://files.theyogastudiosherman.com/uploads/1/3/0/8/130813913/radosidanezikum_mulox_zojam_nesaganamuwoxi.pdfIn PDF document text
    • http://files.lraymondstyles.com/uploads/1/3/1/6/131606984/2751ebdd23fb.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/1/0440/0542/5310/files/11576519431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/catfish_farming_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/subimaviji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3141/files/kenny_g_havana_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5732/3933/files/80567722803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/philips_respironics_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/66627594142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2847/4012/files/fadumisidisuvivezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/basher_sabertooth_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/lao_alphabet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00005dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC3 5340 bytes
SHA-256: 74cd0ea509bf70de2fd8a25c8791088f3f5cc3c43e2455e34006b5399d192a49
font_01_sfnt_off00006fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE1 10908 bytes
SHA-256: 73dda76b708367988b1cbd5282e1c190788941bfbc1c32d44717e1cf3498a5f4
font_02_sfnt_off0000937e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x937E 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210

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