Malicious PDF — malware analysis report

Static analysis result for SHA-256 4429c6f5a65b3ed3…

MALICIOUS

PDF

43.3 KB Created: 2020-08-22 08:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85ac631e9d4241dcf887a02f6a7484fd SHA-1: e247de14e73f227b5deb80d7a48de60add7b2ab4 SHA-256: 4429c6f5a65b3ed31925d46a59b2ff6436e463eeeeb977b01965393cd8d4cf92
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=chrome++certificate+ssl'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to various domains, including multiple Shopify-hosted PDFs. The 'SE_SECRET_RECOVERY_LURE' heuristic strongly suggests the document's intent is to trick the user into revealing sensitive information like private keys or backup codes, likely facilitated by clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=chrome++certificate+ssl In PDF document text
    • http://files.citylifeconstruction.com/uploads/1/3/1/8/131857315/708e249998cd07f.pdfIn PDF document text
    • http://winazupe.southamboyparade.com/uploads/1/3/0/7/130739625/tufuxujowezopo.pdfIn PDF document text
    • http://files.mvhsmajorslibrary.com/uploads/1/3/1/4/131407877/4a2ac803983.pdfIn PDF document text
    • http://files.cathyxwu.com/uploads/1/3/0/8/130873872/f92cf7ae.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/1/0434/2621/8134/files/5e_swashbuckler_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/vepakujisozuvovisilurax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/xoregaxasokirifefite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5907/6510/files/dolamapabiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/68562936611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/vinigexuboladijebeguvubet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/47839641009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38664456414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/33559240029.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_off00006d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 5024 bytes
SHA-256: 32a9d38831f87bddab6903df4a7d0700d4abea2da35ed3456dcd8ae1f0be5143
font_01_sfnt_off00007e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E66 9980 bytes
SHA-256: 278bf806366ab9ee066f72cfd32d0f7f8d8b54e3d3085d29f6c79676c10c33b9

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