Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb3473e17223361…

MALICIOUS

PDF

36.7 KB Created: 2020-07-24 11:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18c6c88fc1ce67766e9a0e74493f002c SHA-1: 08e8e2c1de3ea6c95e25caaa8efef12dd206d659 SHA-256: 2fb3473e172233611ac9dbb60725e1f79b9e83b8041b1061302d985f2dcde621
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure for sheet music, which is then used to mask the malicious redirection. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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/pify?keyword=broken+halos+sheet+music+free In PDF document text
    • http://files.fortheloveofriding.com/uploads/1/3/2/6/132682868/3412443.pdfIn PDF document text
    • http://files.creatingmen.com/uploads/1/3/2/6/132681544/xigenitexugeweb.pdfIn PDF document text
    • http://files.sproutsmyanmar.com/uploads/1/3/2/3/132302863/giburapudiga-dojowul.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/1/0431/9897/2066/files/sizejofexetexogovojebil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2724/2903/files/16850957272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/zaxapowadizexenipum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/ledurof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5447/files/kufajino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/tofofojuzojibanasoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/70810168465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/26754830437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4463/4773/files/wevusegogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5878/1590/files/kojexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0300/2523/files/34709385096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.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_off000053f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F7 5116 bytes
SHA-256: 178b332a62c80a9a4671e581712619ef4a1ebc7f39abb2bb68288e0e48e0646c
font_01_sfnt_off0000652a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652A 9564 bytes
SHA-256: 1f68c006daf2d10b9d435da90e4f20f94e3e24ec309254e3e13fb971ab06a993

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