Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f42dfd24ab0864a…

MALICIOUS

PDF

43.1 KB Created: 2020-07-31 07:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fa92116d31eb04bd09a834b1736ea05 SHA-1: 4470df12c8ea8ca40934fc6eab50b077aa034f31 SHA-256: 0f42dfd24ab0864a2ead3f3c9bb3a8cea45cddb99c06fa65639e5b87041631c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links pointing to a known malicious redirector, ttraff.ru, which is designed to lure users to potentially harmful content. The document body, though heavily obfuscated, suggests a lure related to 'Anatomy of heart pdf'. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to drive traffic to malicious sites. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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=anatomy+of+heart+pdf In PDF document text
    • http://files.martijoyoga.com/uploads/1/3/2/3/132303382/86466b8fc.pdfIn PDF document text
    • http://files.lifesadaisycakepops.com/uploads/1/3/1/3/131383553/1845573.pdfIn PDF document text
    • http://files.my-spiritual-garden.net/uploads/1/3/1/3/131379111/bezobose-nigamebul-mevefawaw-najolilu.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/1/0433/6982/4414/files/7383057540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/jabetoxiwuwugafox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/xejibafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3807/9138/files/20343534112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2166/files/79567316188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4139/6638/files/bakajisojamasawisutib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/36241053531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0471/4404/files/87344734834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/rezozuketifod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1305/4357/files/51799495791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/44622093512.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 7

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_off00006d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2A 4900 bytes
SHA-256: 081a2b71b0d9c3f6898cd1f94efea29c3bf75f3ab5c719e5341f6edae3833b0d
font_01_sfnt_off00007da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA0 9952 bytes
SHA-256: 583cf483baf2191e786c9d7e50a86f0815b86481314695ddce000a6cb5b396cb

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