Malicious PDF — malware analysis report

Static analysis result for SHA-256 052339b9ba982b3a…

MALICIOUS

PDF

36.2 KB Created: 2020-08-24 05:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5fa2643e240780a7d0f7e69aa3b7c693 SHA-1: 14eeebc5bfdab4fb52946f0838f4c47d0eba5368 SHA-256: 052339b9ba982b3a0eda27c5c624fdfe54f364b2693b43115bb564d8d67e6831
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector infrastructure known for malicious activity, specifically a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains text that appears to be a lure for sheet music, combined with the redirector URL. The ML classifier also strongly indicated maliciousness.

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=brandenburg+concerto+2+sheet+music In PDF document text
    • http://files.bluelanternstore.com/uploads/1/3/1/3/131398145/30d3a.pdfIn PDF document text
    • http://budad.besthairsaloninlisle.com/uploads/1/3/2/8/132814930/fepipafezutorefo.pdfIn PDF document text
    • http://sikabifiv.tdcwebstercity.com/uploads/1/3/2/3/132303072/1638387.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/1/0431/2639/0946/files/vezekojelipaxuded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6889/0782/files/43143342302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/demibigenidibalimizulejes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/wuremabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/45231073252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/45977848875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapiguwidekedod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1678/0956/files/16059213024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9415/5170/files/verizon_rebate_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5103/8358/files/noxajipomuxupeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0917/files/download_essential_physics_textbook_for_secondary_school.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 5

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_off00004cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB2 5644 bytes
SHA-256: 91439f87eae077c23f945f92b41e54ad4f4f61fa2b7e929c755ac52af7d875a9
font_01_sfnt_off00005faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAA 10832 bytes
SHA-256: e4c9c6c3633451c13ab721154f8f5a12a1bbb3ea871c531bba8e79334bcac552

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