Malicious PDF — malware analysis report

Static analysis result for SHA-256 37bdf530ffe8ae97…

MALICIOUS

PDF

42.5 KB Created: 2020-08-25 19:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e314ef5cd245f7def8441e250da37aa SHA-1: 0d83e87d329b40da7607c2a4e9d398e76c660138 SHA-256: 37bdf530ffe8ae975ea87a3d1ab6ac1d7f88049234dec29c86b1137d2606190b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.club/pify?keyword=definici%25C3%25B3n+de+manual'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of embedded external links, with the first being 'https://cdn.shopify.com/s/files/1/0430/7730/4481/files/8844629075.pdf'. The document body, though partially garbled, contains text related to 'Definición de manual' and mentions wkhtmltopdf, suggesting a lure document.

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.club/pify?keyword=definici%25C3%25B3n+de+manual In PDF document text
    • http://files.marielr.com/uploads/1/3/0/7/130775509/nolisonenidexukubizi.pdfIn PDF document text
    • http://files.vcaec.org/uploads/1/3/1/8/131858287/141951.pdfIn PDF document text
    • http://rubume.kimtarrestaurant.com/uploads/1/3/1/8/131856372/rozovevo_newadovujolebu.pdfIn PDF document text
    • http://files.alamedatcom.org/uploads/1/3/1/0/131070178/bulepi.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/1/0430/7730/4481/files/8844629075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/37887406129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/94686217299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3658/9730/files/mubelunizuzotuteloti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/hallelujah_sheet_music_for_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/turtle_diagram_template_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/raxufutasedibow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7807/5036/files/81902967933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/mizolomutezegakuvuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2811/9706/files/54774009176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/57245109875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/muzopigalejixelaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/cracking_the_code_interview_github.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 7

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_off00006711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6711 5028 bytes
SHA-256: eff67222d7de83d197552b3e4f941ee2fff501f7956e294f0968956d1f151160
font_01_sfnt_off000077da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DA 10996 bytes
SHA-256: dea4b7eaa1a795cf0db7020049fe9f30755c76afca0e8a5ce0d0cf0316589d16

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