Malicious PDF — malware analysis report

Static analysis result for SHA-256 685714f545a5ce54…

MALICIOUS

PDF

41.1 KB Created: 2020-08-16 20:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1b4955bac85e8ca1b50e9c69fb81cf5 SHA-1: 40010e9436c3d97c56e41874325dd67fc4a6878c SHA-256: 685714f545a5ce54664f4f925333b2b2278939423fd2125fd44b31b54157d167
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body text, though corrupted, contains keywords related to sheet music and a URL that is also present in the heuristics, suggesting a lure to download further content. The ML classifier strongly indicates 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=lonely+piano+sheet+music+fortnite In PDF document text
    • http://zalejiton.zenbeautychester.com/uploads/1/3/1/3/131383363/kofetujiwovojugatiwa.pdfIn PDF document text
    • http://files.wls-phd.com/uploads/1/3/1/6/131606222/jajilezutenivale.pdfIn PDF document text
    • http://files.aubsblog.com/uploads/1/3/0/8/130813855/6264195.pdfIn PDF document text
    • http://files.rbrphotography.ca/uploads/1/3/1/6/131607712/6505765.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/1/0438/2107/2546/files/aisin_clutch_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/tijozopebuzojavogutudado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4649/2565/files/joxojagunikapirin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7461/7511/files/19760587532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/dna_amplification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/tipping_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/arqueologia_prohibida_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7579/5099/files/gozaxotafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/32705132247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1960/6936/files/98856900812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0595/8553/files/abs_plastic_properties.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 7

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_off00006345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6345 5300 bytes
SHA-256: b698d1fba12d06f1c0454b68357e159ccfe3fae5fe2e8fe713aca24139c57d76
font_01_sfnt_off0000752c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752C 10060 bytes
SHA-256: d5bf6aec8ecb6fa8cac730a408c39daabdb9b88395d75ed42c7606f72ecb9e40

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