Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb122ebb2b828cfc…

MALICIOUS

PDF

40.7 KB Created: 2020-08-12 01:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fec9845a6b0f3a656d13d1c4245f8c1c SHA-1: 1d25ebd9557ffd6427d9c3f57002efa6f30a5b9c SHA-256: cb122ebb2b828cfc0a5b0262b7d1cd1cbb730f77b935d315c648c03cb6225ba8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body presents itself as a '2015 volkswagen tiguan user manual' and contains a link to `https://ttraff.cc/wb?keyword=2015%20volkswagen%20tiguan%20user%20manual`, which is likely the initial lure. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify-hosted PDFs, suggesting a SEO poisoning or link farm tactic to distribute the malicious URL.

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/wb?keyword=2015%20volkswagen%20tiguan%20user%20manual In PDF document text
    • http://zezesom.houseoflightuk.com/uploads/1/3/2/6/132680813/mikojulawitif.pdfIn PDF document text
    • http://files.raydickaty.com/uploads/1/3/0/7/130775304/totupib.pdfIn PDF document text
    • http://files.stuarthabley.com/uploads/1/3/0/8/130814715/nirur.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/1/0430/6518/0321/files/42809354136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/61021550975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8877/3269/files/guwiguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/libelurakugamosaxevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1430/6467/files/skewed_normal_distribution_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/scert_haryana_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/html_to_javascript_jsfiddle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6523/6895/files/sijewurimovorivotepeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94229011204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2534/1343/files/gate_2020_ee_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4468/4454/files/vunadimidumamomoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/79496024978.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_off00005fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD5 5576 bytes
SHA-256: 3229f327ede5f8c50a8fb0e29ad66491a5a09f1637d20c3d639b3b3190321626
font_01_sfnt_off000072c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 10272 bytes
SHA-256: ee06efc75af964259a114715cb969b0be5632b21e1aec28e9242cdeefdda1c33

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