Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7fefc80a34a2378…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 22:04:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fad5f3463021883e45a7952f51bcb309 SHA-1: bd8274e429325c8964f019e76b1e7d75f5f830ca SHA-256: c7fefc80a34a2378aa9fdeedcadbb905b5d3b1caf53d7e99d0167ebcee3867ad
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting an SEO manipulation or redirection scheme. The document body, though corrupted, contains text related to 'queen bohemian rhapsody piano sheet pdf' and a URL that appears to be a redirector. The presence of numerous links, including one to a known malicious redirector, indicates a likely attempt to lure users to malicious content.

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=queen+bohemian+rhapsody+piano+sheet+pdf In PDF document text
    • http://files.gtagfr.com/uploads/1/3/0/7/130775103/846bfd.pdfIn PDF document text
    • http://files.successfulbreastfeeding.org/uploads/1/3/0/8/130813614/6064912.pdfIn PDF document text
    • http://files.indianawatershedinitiative.com/uploads/1/3/0/7/130776611/5902327.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/1/0437/0323/8811/files/nazitanupaneje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/the_systematic_design_of_instruction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8715/0752/files/80262833944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1746/9080/files/malovofepowipumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/cdf_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/65695687130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/21013149027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/discord_how_to_color_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zamujogeve.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_off000061f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F4 5552 bytes
SHA-256: 5c97c91e73acbe4275e0cc1c12e8fdffc2fe31aaa14a6360112648636afaf053
font_01_sfnt_off000074a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A2 10060 bytes
SHA-256: c90d0ea8442b8261a182ee788534fe439858a24edfde4cc3d584bd8b9c32b53d

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