Malicious PDF — malware analysis report

Static analysis result for SHA-256 771ae7b0d93158b2…

MALICIOUS

PDF

45.9 KB Created: 2020-08-18 22:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da6adf0bc2114319836a2f0a9d168aec SHA-1: 55c12550c80ff80182ebf55ebc7e5d5b455ba093 SHA-256: 771ae7b0d93158b2f0063c85615a4dd0fc1af7430af058fb81ff318921dca08b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirectors and SEO link farms, indicating a malicious intent to drive traffic to potentially harmful sites. The primary redirector URL, 'https://ttraff.ru/pify?keyword=fieldrunners+attack+guide', suggests a lure for users interested in game guides, likely a pretext for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF.

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=fieldrunners+attack+guide In PDF document text
    • http://files.musicin233.com/uploads/1/3/2/7/132740905/20eb0d2.pdfIn PDF document text
    • http://teguboz.arnaldomorales.com/uploads/1/3/1/6/131607095/a89010.pdfIn PDF document text
    • http://kijogon.socalroofingpros.net/uploads/1/3/2/7/132740494/6ae91d.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/1/0433/9813/5966/files/17911094902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/83257841410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8353/4229/files/aeneid_virgil_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9013/1609/files/bee_venom_collector_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/tapozabolokesubune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/91178447309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3996/files/bibutimadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/68399641086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/5378026295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/16360155007.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 2

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_off00007701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7701 5128 bytes
SHA-256: 16268a66ff69a0f32dfd95c5159ef82faabd066482084e9cffbc035fef795313
font_01_sfnt_off00008876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8876 10120 bytes
SHA-256: 4e68256db679a2075237d035741d52d1422d8b031bb3e9986a94209a69aba6e5

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