Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9ec8894a57229f…

MALICIOUS

PDF

37.0 KB Created: 2020-09-13 04:39:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 580f881b0c3335c3ddbf0cb45efa34a2 SHA-1: a8b970323efd50d5deab89031b7bb60ee3f02924 SHA-256: 2a9ec8894a57229f95a2ff356435204de89de341d75d174966aefa0bdb7cdee6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to suspicious domains and are likely part of a link farm designed to manipulate search engine results. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains keywords related to a reloading manual, suggesting a lure to attract users interested in such content. The primary attack pattern involves redirecting users to malicious sites through these embedded links.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/wix?keyword=lyman+reloading+manual+49th+edition+pdf In PDF document text
    • http://japufo.harborislandgardenclub.com/uploads/1/3/0/8/130814328/sezamiraditebi.pdfIn PDF document text
    • http://files.urbanmuttretreat.com/uploads/1/3/0/8/130874683/godudadepi.pdfIn PDF document text
    • http://mafinon.transactionbankingacademy.com/uploads/1/3/1/4/131483152/8ce7755c.pdfIn PDF document text
    • http://files.thehadlowtower.co.uk/uploads/1/3/1/6/131606260/fiforux-xidotegesaga-tepeduwunikijar.pdfIn PDF document text
    • http://gomanoded.dulcimerjim.com/uploads/1/3/1/6/131636725/pevulemuf-zemox-notif.pdfIn PDF document text
    • http://wijikolok.tmis.us/uploads/1/3/2/7/132741024/9196452.pdfIn PDF document text
    • http://files.testingequipmentstore.com/uploads/1/3/0/7/130740264/fa54bfc68d2741.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/1/0431/4942/6839/files/83041371847.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dec231_e74a28c2e6a74c40bd7b3b65d1a8ae10.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d7ba0f_a61abd0585614fa494c6fa9be9003437.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/81ef4b_033a1ad274794f5293de72b70ac49e28.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_off0000502d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x502D 5564 bytes
SHA-256: 60f1c60dc953b614a8321d9ce54bbd5b8fcbcdf15a74a437f8cd41d9be7898f6
font_01_sfnt_off00006300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6300 10676 bytes
SHA-256: 9b7fb1df79d9c25698d05e5876e01ecef79a95c10dcbc9bafdd17fbd3f471c34

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