Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f1867019eb0a46…

MALICIOUS

PDF

49.6 KB Created: 2020-07-29 16:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1755c71b7967ce6ed60481f5542c9a65 SHA-1: 768eaff369c9d113f6ca5e92ffe1cbf660227c20 SHA-256: 79f1867019eb0a4666fbf1d471e239fa82d1f049d5f0fd5c5a0d09e59cf34366
194 Risk Score

Malware Insights

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

This PDF file contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to SEO-optimized link farms. The primary redirector URL is 'https://ttraff.ru/pify?keyword=work+the+system+book+pdf', which is likely part of a phishing or scam campaign. The document body is heavily obfuscated and contains no readable text, but the presence of numerous links and the ML classifier strongly suggest 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=work+the+system+book+pdf In PDF document text
    • http://files.pragueguidebooks.com/uploads/1/3/2/6/132681632/4e65907699c.pdfIn PDF document text
    • http://files.geraldinefirequeen.co.uk/uploads/1/3/0/8/130874120/2817852.pdfIn PDF document text
    • http://files.tinpotleague.com/uploads/1/3/0/8/130814258/3258016.pdfIn PDF document text
    • http://files.dontcrampourstyle.com/uploads/1/3/1/3/131380728/1651660.pdfIn PDF document text
    • http://files.bobbeywillson.com/uploads/1/3/1/4/131482976/4851715.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/1/0430/6426/2818/files/ruregizodagolokedaxem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/68044891126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2935/4903/files/bubajulotowotadila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5947/6630/files/gasilazoverobobagimubox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/38700495651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8680/7201/files/90933496129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaxolaxowixinetubosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8461/9680/files/27250515686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kumug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4402/8059/files/7123358591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/wafajele.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_off00008512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8512 4992 bytes
SHA-256: 8e2665cb4eb9881b56ec6d43045076dd9e44b03b2e26814b610e7e1906480e14
font_01_sfnt_off0000961d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961D 10232 bytes
SHA-256: 1ff961ece0aa4529635065bb848a2b6a33f91d45b61a2412ed6a69d350936dce

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