Malicious PDF — malware analysis report

Static analysis result for SHA-256 137c3480e33a2974…

MALICIOUS

PDF

47.6 KB Created: 2020-08-20 03:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8980dda49f8c688a9cca9ff0f9b6789b SHA-1: 6c43edf6fb7da2fbc5665b44e23f0a62f10fc216 SHA-256: 137c3480e33a2974fc303e9b4b8487c71f0216e51a526a1d1e7862f0e0006733
194 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious content, specifically advertising a hack for 'Robbery Bob 2'. The primary redirector URL is https://ttraff.ru/pify?keyword=robbery+bob+2+hack+apk+2018, which is flagged as malicious. The document's structure and embedded links suggest a phishing or scam attempt to lure victims with promises of game cheats.

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=robbery+bob+2+hack+apk+2018 In PDF document text
    • http://files.rosaveritas.nl/uploads/1/3/1/4/131452903/bofezekigigugu-wexujesofajifi-doraluk.pdfIn PDF document text
    • http://buxixepig.t-bart.org/uploads/1/3/1/6/131606490/71cb10c3.pdfIn PDF document text
    • http://files.ochsbass.com/uploads/1/3/2/7/132710575/9066850.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/1/0427/4647/8759/files/53657878271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/32570065476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/41989089026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0162/4214/files/89418039229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/miletuzafepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/92732380714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/95789080816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/93400585281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/79768249788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/sojexapeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/may_bullitin_boards.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 4

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_off000078ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 5644 bytes
SHA-256: 189d235d2560f1e786a1876b4c148328a9cb11f0fa758b5e81e8bd16390480a9
font_01_sfnt_off00008c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C22 11224 bytes
SHA-256: 0a89c2893f6f4518739e141d53e09c3fa8fa4d9213750f4a62963a413629b10e

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