Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3776c954196561…

MALICIOUS

PDF

32.3 KB Created: 2020-08-25 04:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e8210c9f32faa2b5ff09e9eaecd65dc SHA-1: 6b3a54e5a257fae05a87fbde2b80535f6dedd8a1 SHA-256: 0a3776c95419656159a4a41d36b9a154e667e4759398b0bccf0314d70a6dab09
162 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The heuristic firings indicate this is a malicious redirector link and a PDF link farm. The document body, though heavily obfuscated, contains URLs that are likely part of this lure. The primary attack pattern involves directing users to malicious infrastructure through a deceptive link farm.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=challa+song++djpunjab In PDF document text
    • http://totuw.thepuzzleleaguedance.com/uploads/1/3/1/1/131164250/909d86e23d558.pdfIn PDF document text
    • http://jetifese.accumeasurefitness.com/uploads/1/3/1/4/131454165/c3d265f1ba2d.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/1/0429/6222/3263/files/71844169993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/40129685192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/22191085612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/lifojaremaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/jadebetabud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/muwavalonuratuxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/19304239984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/legit_csgo_skin_sites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/27723985348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9966/0194/files/funeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1158/files/50719003989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9191/files/vagoriresutar.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 1

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_off00004290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4290 5248 bytes
SHA-256: df71052a62cc223cc9492319c9e2bcab8e32dffebf4154a262636eb3fa9c48f4
font_01_sfnt_off0000545f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x545F 9400 bytes
SHA-256: 275dd03e1135c6cc0c5453654e3b4558595c576fd2d27ede4cf26186ae82d1f2

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