Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c65830de0f46d65…

MALICIOUS

PDF

41.1 KB Created: 2020-08-11 04:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cac45c3fe982547a8e7f46a3c3ae1872 SHA-1: fea7c5b3c2ac80e19ff3164f0b1bce1ff8b73da0 SHA-256: 7c65830de0f46d654e31c92d06f15b87773f808125458fb29c7a05c8074b8aed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with a critical heuristic firing indicating it redirects to known malicious infrastructure via 'https://ttraff.cc/pify?keyword=le+systeme+bielle+manivelle+pdf'. The document body, though partially corrupted, contains text related to 'Le systeme bielle manivelle pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious links. The presence of many external PDF links, some benign and some unknown, further supports a link farm or phishing attempt.

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=le+systeme+bielle+manivelle+pdf In PDF document text
    • http://files.dndforwomen.com/uploads/1/3/0/9/130968996/6145718.pdfIn PDF document text
    • http://files.sdgeranium.org/uploads/1/3/1/0/131070792/719629.pdfIn PDF document text
    • http://files.nikkipinkwriter.com/uploads/1/3/1/4/131483254/zediva_zumifumipir_doxelanirewij_ruzuzuje.pdfIn PDF document text
    • http://tosazuw.crossroads-engineering.com/uploads/1/3/1/6/131606479/6935157.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/1/0427/4287/4278/files/lalav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5644/8156/files/73026956858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2641/5779/files/discrete_mathematics_5th_edition_dossey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8602/0761/files/xexolameraluvekiwidupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/dibosot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/jufegobexadoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/jarurevajigewokunapixumel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/gogemefenawuxofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/ligodubulolitaxupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0268/files/togam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/bignoniaceae_family.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/54712069097.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 4

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_off00005e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E72 5336 bytes
SHA-256: dba3104ba454a7abccda82e90384debba1f9ca0ab025430b191cdbf5a9897dcc
font_01_sfnt_off00007091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7091 11868 bytes
SHA-256: bb44addd6d58e7f23fc8b5489c1659a6af99dee72d919d70cfc1ddb33e294788

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