Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e90a44d506927b3…

MALICIOUS

PDF

33.3 KB Created: 2020-08-20 13:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 050d11f4158e22696d101f7d4a342d45 SHA-1: 3c484e477ff58636763be7da09499885f2aac176 SHA-256: 5e90a44d506927b3ed6af49c9a066c712e3170ace1af285e1e2dadaa26dc2be3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=prime+factorization+of+180+answers'. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or phishing lure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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=prime+factorization+of+180+answers In PDF document text
    • http://files.redandgreen.net/uploads/1/3/2/7/132740278/1f45b9f20eeac8.pdfIn PDF document text
    • http://files.met-track.com/uploads/1/3/1/0/131070330/5729293.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/1/0435/1610/0776/files/iron_jawed_angels_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/28573580647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/5562941234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1909/0595/files/pigorezirilope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/rizeliludi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1665/files/70143102615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65939759823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/korewibotuvidadob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/xedadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/88203464415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/arithmetic_sequence_problem_solving_with_solution.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 2

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_off000044ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44ED 5524 bytes
SHA-256: ec960ca2f9543699ebb958271f76f51f506a205355f5e5778325944c6511de75
font_01_sfnt_off000057b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 9624 bytes
SHA-256: 4963d7b3a8463aa83c3ea157f2de0b4b947068e7a36eb81d2205e0d833cab7b7

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