Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb4130b9c198b83…

MALICIOUS

PDF

33.8 KB Created: 2020-08-27 22:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7db66fc2e133847552d9a5efcb87a8b1 SHA-1: 5199ddba8b41a59d2c2662834547dafcf411cefc SHA-256: 3eb4130b9c198b83d2f9d021841242732022405b9800ebce2f524e41bce9b184
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a link to a technical manual. The document also contains a large number of links to other PDFs hosted on various domains, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the presence of the malicious redirector and the link farm indicate a phishing or malware distribution 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=aisc+steel+construction+manual+14th+edition In PDF document text
    • http://wepusegi.sp-arms.com/uploads/1/3/1/4/131453718/jefojowatinizi_vojifizas_zizawofelilebad.pdfIn PDF document text
    • http://files.act-lab.net/uploads/1/3/1/8/131856134/e4c718.pdfIn PDF document text
    • http://sesivux.kingfisher-strategy.com/uploads/1/3/2/3/132302868/9874854.pdfIn PDF document text
    • http://ragura.hoolants-beton.com/uploads/1/3/2/8/132814930/40e989e.pdfIn PDF document text
    • http://tilagid.midsouthdistributingusa.com/uploads/1/3/1/4/131482993/jegolizapajuke-leridi-rajeka-kowakifisojedim.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/1/0433/3967/7855/files/forovurolomofiwemej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/mizuponelopamawepada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6578/3958/files/historia_de_la_brujeria_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9049/4119/files/blitzer_algebra_and_trigonometry_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/40473001787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/1977_dodge_motorhome_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/walalenejanapipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/xuxovakopaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/sevubafokivupebenife.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_off00004878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4878 5308 bytes
SHA-256: ee3715af94db9cda2d9c6bb2b2ddd1bd03bacd82d4a2fb0d9c0847e882e5bf5b
font_01_sfnt_off00005a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A50 9376 bytes
SHA-256: 39303ca4fcf31da86a13da6274f5168ed3b3c87449c701ab1a6722068293d533

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