Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fb65a2eaeff40de…

MALICIOUS

PDF

41.4 KB Created: 2020-08-09 09:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7194bc3ae0bb962a71168dc67c5aca93 SHA-1: cfc8b5e20805e6d7cefdb8c62f4ea485cd9cb924 SHA-256: 9fb65a2eaeff40dedf85fa076b48262e78752715d40450e67337c0433bd75291
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to known malicious infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'calisthenics workout book pdf'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=calisthenics+workout+book+pdf, which is likely used to redirect users to a further malicious destination. The PDF also contains a large number of embedded links, as flagged by PDF_SEO_LINK_FARM, suggesting a link farm or spamming technique.

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=calisthenics+workout+book+pdf In PDF document text
    • http://files.ceciliadesigns.com/uploads/1/3/0/7/130776493/xelukowu.pdfIn PDF document text
    • http://files.downsjuniormusic.com/uploads/1/3/1/4/131454345/edc17bcbf525.pdfIn PDF document text
    • http://files.safepassagesandprose.com/uploads/1/3/2/6/132681325/7865488.pdfIn PDF document text
    • http://files.purelightwindowcleaning.com/uploads/1/3/0/7/130775712/1196040.pdfIn PDF document text
    • http://tonuruzij.meadowsweetgrove.com/uploads/1/3/1/4/131452836/mejubugibonezosuxome.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/1/0431/8684/7903/files/34687435373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/73239968819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/paulo_coelho_libros_descargar_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2855/3634/files/boost_self_esteem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/pusudelorixozivemerufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2261/files/xelutisawisetefoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/guvasepovon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/bubamaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/obs_media_source.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/32231975516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2247/5687/files/41785421150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/51881237423.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 8

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_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 5444 bytes
SHA-256: 787fae6d44cbf6a3fb3aebacdb26d5d978803665ae855aaf468bc5b6d35d7718
font_01_sfnt_off000074fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FE 10480 bytes
SHA-256: e0680dd2765be2c8bf63746b9e61286d8dd43bcc5dfa254e62e87603ad7dceb1

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