Malicious PDF — malware analysis report

Static analysis result for SHA-256 edf9990f66744e82…

MALICIOUS

PDF

35.0 KB Created: 2020-08-22 05:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f21010a4277c83543b36b28fbab670d SHA-1: d3c833ac9cd3229eb00f246a97d63fc9805ec82e SHA-256: edf9990f66744e82b1e0414f1f18e3e87c2bfa6938106d34b8c7f6a3102cdc8d
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 PDF links, suggesting an SEO manipulation or link farm tactic. The primary malicious link identified is https://ttraff.com/pify?keyword=crackling+sound+effect+free, which is likely used to redirect users to further malicious content. 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.com/pify?keyword=crackling+sound+effect+free In PDF document text
    • http://kijexesuw.bellsgc.com/uploads/1/3/0/8/130874523/5608533.pdfIn PDF document text
    • http://sogufin.fatdogsoapworks.com/uploads/1/3/2/8/132815176/ce50d.pdfIn PDF document text
    • http://files.trenchninja.com/uploads/1/3/0/9/130969399/772008.pdfIn PDF document text
    • http://lotavejov.alphaomegamartialarts.org/uploads/1/3/0/7/130776485/5991756.pdfIn PDF document text
    • http://files.stephaniemadeira.com/uploads/1/3/1/8/131856919/5082427.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/1/0433/5576/6942/files/nibevuvol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1724/4570/files/owners_manual_ford_fusion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/biopsicologia_de_la_emocion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/87614454794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/nifosegekevubewixenusiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/namoger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8614/6712/files/58228472131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/77278433461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/togav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4327/4402/files/jomikozamexexazu.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 4

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_off00004d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D53 5160 bytes
SHA-256: 215e038485e782850b2542ee096df377b0eee951eb58bc8e3778932e0a49065b
font_01_sfnt_off00005ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE3 9708 bytes
SHA-256: 3165b145f76d0c565882673c960e5c09c7c9ee75d8182341d71a731b2d2e07ea

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