Malicious PDF — malware analysis report

Static analysis result for SHA-256 b635aacfc48d6a14…

MALICIOUS

PDF

60.5 KB Created: 2020-10-08 10:51:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b02bea3fb2d524f2b9e0b697f885b986 SHA-1: 91f6826b9764fbd1d7d2278f42393748aa15a0a0 SHA-256: b635aacfc48d6a141ef54ba5565a000e063a8332b03945d39b6ae4d3a3efdcff
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and appear to be part of a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic, suggesting the primary purpose is to redirect users to potentially malicious content.

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://gettraff.ru/strik?keyword=skyrim+se+xbox+one+load+order In PDF document text
    • http://tabokim.sophie-elise.co.uk/uploads/1/3/2/6/132683188/34954a.pdfIn PDF document text
    • http://files.georgetownpiano.com/uploads/1/3/1/4/131406140/1793716.pdfIn PDF document text
    • http://files.katemarch.com/uploads/1/3/1/3/131380493/lapolezogurasedaf.pdfIn PDF document text
    • http://files.allstudentsallstandards.org/uploads/1/3/0/8/130873876/7027927.pdfIn PDF document text
    • http://tijadep.850plants.com/uploads/1/3/0/7/130739344/gamiteduzalare-nodejezefago-rewuvej.pdfIn PDF document text
    • http://files.artystafoto.com/uploads/1/3/0/7/130739530/segiva_rivuru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/75209840-c92d-40d0-9461-71b150433eea/35236021902.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff393c9-86c2-4db2-ac65-51633d3d76fb/kidogujagozovitabojane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91e32067-9c8e-494f-a958-aa72fa74d0fa/38478358205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96dfb50c-60f5-4ae0-add5-bdc3ddc5d0fe/36067835154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2164/2146/files/gw2_how_to_get_ascended_weapons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1970/5761/files/pulikibededoverizinune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/fisher_paykel_dryer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA06B 5156 bytes
SHA-256: e8da1162d041ed88bb4a85560df7e9512c5b25b7a612fa655318cc478c60c2ac
font_01_sfnt_off0000b1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CA 11028 bytes
SHA-256: 76eedc1abf25a7e049d3fa363aea306dd03ee3a9403605df1bd20aff6b5f3d21
font_02_sfnt_off0000d74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.