Malicious PDF — malware analysis report

Static analysis result for SHA-256 f536445ba72aaed1…

MALICIOUS

PDF

54.1 KB Created: 2020-07-31 14:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: affc419fba6a62347c7157343ed9c64d SHA-1: 49525520494b3eac6b20f833185bc5a35b3ccf70 SHA-256: f536445ba72aaed1a340dc652770b2d73bf17bdba79cd08701b9766b27aae11a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous links hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'Adobe pdf converter software', suggesting a lure to trick users into clicking the malicious link. The presence of a 'download button' heuristic further supports this phishing-like lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adobe+pdf+converter+software In PDF document text
    • http://files.mndeathcollaborative.com/uploads/1/3/1/4/131438839/c03b91448.pdfIn PDF document text
    • http://files.shaqisoutthere.org/uploads/1/3/2/6/132681992/eadd9bcb8be7cb.pdfIn PDF document text
    • http://files.redriverretentionauthority.net/uploads/1/3/0/7/130776712/xukulimoguxal.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/1/0432/4173/4311/files/lemudovap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1272/6677/files/bomuzorixapaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/44911689814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/galuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/kojivojebuvodubakogadupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/44962643565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/kowadoremaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizuvesadumewagetikuxumut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2102/files/xabizataze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/54601751770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/vegukekiposapuvofir.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 8

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_off00009650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9650 5136 bytes
SHA-256: 31a685a4609d0b15ab6fcdf885d37c0f8cc1a2ce148413234cacde0d63e62c22
font_01_sfnt_off0000a7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D4 10344 bytes
SHA-256: 4ef31280a0f01ae2d21ebe2ccb20ced51d807942b8038c0017cb6bbbab1b5d60

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