Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a6ee6c80b39e0a…

MALICIOUS

PDF

40.1 KB Created: 2020-08-13 06:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a9c3d003c9c77ee8065c32a5b165625 SHA-1: 705842b22a4a5d75746d08881299912a0df86027 SHA-256: 37a6ee6c80b39e0a1cceaf9851582f4674b02f48be16c9cc65e21b26befbcc39
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This suggests a social engineering attempt to trick users into visiting a malicious site under the guise of accessing a 'music theory and transposing guide pdf'. The document body, though heavily obfuscated, contains the same URL. No scripts were extracted from this sample.

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.com/wb?keyword=music%20theory%20and%20transposing%20guide%20pdf In PDF document text
    • http://wanak.tlblade.com/uploads/1/3/1/1/131164250/3953803.pdfIn PDF document text
    • http://disimikag.materials-glasgow.org/uploads/1/3/1/6/131606066/8062396.pdfIn PDF document text
    • http://files.topdogracing.com/uploads/1/3/1/6/131606719/livexed.pdfIn PDF document text
    • http://files.stahlmennonite.org/uploads/1/3/2/6/132682585/dixixegoletanev-lokigagunojov-rivupejutuwule-visaremuxis.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/1/0428/3986/7559/files/arterial_blood_gas_interpretation_a_case_study_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/zeliwav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/falling_leaves_adeline_yen_mah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/wotopumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/celi_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5365/6738/files/futekiwuxuluxagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/dicionrio_jurdico_da_academia_brasileira_de_letras_jurdicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/captured_by_a_better_vision.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/notawedeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/67519194814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/zuwisenemajoveguziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/99333666293.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_off00005c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9B 5492 bytes
SHA-256: 37be3c179392f2cb2b6475abb6d6b31ea356825678f75175950180df2c4a2125
font_01_sfnt_off00006f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F54 10624 bytes
SHA-256: da5ba3cb9b50ed203d680fb08b282d56872ff8b089cdaf6c6d8712352cce93bc

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