Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fcac9d5ce28d1a7…

MALICIOUS

PDF

41.5 KB Created: 2020-07-24 09:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 930251bc0b9594173a5f389ff99753cb SHA-1: 00a5156b8554197e122b5b140f774bcc0813f5bc SHA-256: 7fcac9d5ce28d1a7823410bdd669c7db32a8ac0d248ca5b8d4ad4af5c1976eff
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically linking to 'ttraff.ru/pify'. This URL is identified as a known malicious redirector and part of an SEO link farm, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to worksheets and PDF creation, aligning with the lure. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence score strongly indicate malicious intent.

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=adding+doubles+worksheet+pdf In PDF document text
    • http://files.tailor-madefitness.com/uploads/1/3/1/8/131872079/jafubujiki-risozodofed.pdfIn PDF document text
    • http://files.lifestylehealth12.com/uploads/1/3/1/6/131636988/a790bd70c.pdfIn PDF document text
    • http://files.aclinlab.org/uploads/1/3/2/3/132303322/6d11f.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/1/0430/5590/6973/files/11416190363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/54511847380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/81791851581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuxevitilikibuvenimomabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/77796772131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/66854556359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/duzejininafeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7394/files/26448605696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2439/0056/files/45762759654.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 6

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_off00006526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6526 5260 bytes
SHA-256: a0819285b18cafa029074ad8b8aba69ee3f9c5b3c1ead3e693a869769d44b1d2
font_01_sfnt_off0000770c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770C 10036 bytes
SHA-256: 4b50a6ae7b33423fc9fa50d88c5920f687553a7b6eed2079bf16383fcc8cbd37

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