Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ef9aa6135db18c…

MALICIOUS

PDF

51.0 KB Created: 2020-08-14 10:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04ed5a863247e051b868c1e2ee56b3cf SHA-1: 82c2262b3bea01b6793ec418f0c3a7d642bbe638 SHA-256: c3ef9aa6135db18cd2c40c29a883865ab344335750b423e06c214388658f0fb4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=yaadon+ki+baaraat+songs+free'. This URL is embedded within the document body, suggesting a social engineering lure related to song downloads. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=yaadon+ki+baaraat+songs+free In PDF document text
    • http://files.thebiologistapprentice.com/uploads/1/3/2/6/132695472/domedisurowedilutuv.pdfIn PDF document text
    • http://vexajam.mccoypta.org/uploads/1/3/1/1/131163927/4107109.pdfIn PDF document text
    • http://pawuwe.madelize.com/uploads/1/3/1/1/131164250/pevow.pdfIn PDF document text
    • http://molud.thecatholiccrusade.com/uploads/1/3/2/7/132740585/xudarusumewe.pdfIn PDF document text
    • http://files.herefordshirefencingclub.co.uk/uploads/1/3/2/7/132741194/sakogolegomikibem.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/1/0433/2378/5370/files/lisep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0923/5355/files/90895799715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5063/5162/files/aerobatic_maneuvers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2926/5564/files/31170314642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/29290971147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8817/5519/files/99833987894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/vufujazegisebut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gikari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/pepasodilopibidikukunibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/58676998002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/98992879049.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_off0000803c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803C 5208 bytes
SHA-256: 833d0162ecad8017c751b61e9ca6a1b77835dba0ab6d7fe524ca6edd331bc795
font_01_sfnt_off000091fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FC 14636 bytes
SHA-256: 5d853e7ebca7caf505a74d2715c00209b3190af748c2b16fd2577065359eeab5

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