Malicious PDF — malware analysis report

Static analysis result for SHA-256 b737244e3cfcd925…

MALICIOUS

PDF

49.8 KB Created: 2020-08-01 18:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b473a416acec70f317f660ec92f2419f SHA-1: b797574e43b849a4ce096dcbab87820fa0e55ff7 SHA-256: b737244e3cfcd925b6ce060646cedfd1d8f862bc0caf7e55d9d903e7dbf830a4
222 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure malicious destinations. One critical heuristic indicates a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body and heuristics also suggest a lure related to invoices or payments, and a callback phishing pretext, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=texas+surcharge+indigent In PDF document text
    • http://files.forumartspace.com/uploads/1/3/0/7/130740213/tolanudapej_zuvojadadas_fepolumitijapi.pdfIn PDF document text
    • http://files.judelab.com/uploads/1/3/1/3/131380771/08912831c5.pdfIn PDF document text
    • http://files.originalsexyslave.com/uploads/1/3/0/9/130969004/ca2abe.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/1/0430/3713/0914/files/karagodifugaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magizokoluredofet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/73827878295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/65649043818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/79851997996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8670/8889/files/rariza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/48377810752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/72280849391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/43550326424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6689/files/muzunon.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_off000083a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A4 5188 bytes
SHA-256: 5e3f47e0d173924015c692855b4804528da6b390d5bdb5f0b8aaf60a167da3c2
font_01_sfnt_off00009543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9543 11172 bytes
SHA-256: ee5df27d3df1a87d6d1f438b9f0dc04ab8afc8202d5864edd5017038fc2b8ac0

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