Malicious PDF — malware analysis report

Static analysis result for SHA-256 a481d526bfca490d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 14:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c5a03e49926c3b0d7062b3674dc7c56 SHA-1: a31252760435b1fcb36a79bf3256db706ca33777 SHA-256: a481d526bfca490d3ec593909c0d2e738fd7828b6463ddd25fe67baba86c6bd4
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as 'Harry potter bassoon sheet music' which redirects to a known malicious domain (ttraff.cc). The PDF also contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. The primary malicious link is the redirector.

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=harry+potter+bassoon+sheet+music In PDF document text
    • http://files.frontporchmusic.org/uploads/1/3/0/7/130739398/18a260.pdfIn PDF document text
    • http://zedoze.ucfootball.co.nz/uploads/1/3/2/6/132681927/buvipenorabifutin.pdfIn PDF document text
    • http://files.impactaquariums.com/uploads/1/3/0/7/130738568/zitemak.pdfIn PDF document text
    • http://xukozuf.michellempnd.com/uploads/1/3/1/1/131163635/zupukobowi_xuwovevuzop.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/1/0449/4236/0744/files/garita_el_chaparral_reporte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/89619870485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3274/7927/files/jijadulebexepanum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/48011967971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6787/3182/files/git_remove_cached.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/68768268646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/demila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/5801858941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/59318111966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7211/1260/files/fundamentals_of_multinational_finance_moffett.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/75223890476.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_off00005c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7D 5344 bytes
SHA-256: 7e608c3bf0a152e15de23707a826ab04fc68b1c35983e0e434c58c6532273503
font_01_sfnt_off00006e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 10008 bytes
SHA-256: eb4e01966f37ce49909e07f1017995c8e6c2f1c397b7698f6042d51177830b4a

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