Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e465362f337bc4…

MALICIOUS

PDF

62.7 KB Created: 2021-02-18 05:48:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9ba9d7e58ada04e7e224a992672b524a SHA-1: 4f769e22f027f8d66eba4f2fb98655e975f7f0d7 SHA-256: b7e465362f337bc451a0824223aafd3dae0512940392e1c9a68b93cb04db3fa5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to 'jacksth.ru' which is flagged as suspicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for a large number of links, suggesting a malicious intent to distribute or phish. While no scripts were extracted, the overall structure and URL patterns strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jacksth.ru/strik?utm_term=dometic+duo+therm+ac+cover PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375515/normal_5fc96d3052358.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/jfjjy8t/tebexeliv.pdfIn PDF document text
    • https://pevarigemi.weebly.com/uploads/1/3/5/3/135303959/webibilavo.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/jwjfgiq/police_car_real_drift_simulator_3d_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476577/normal_60047936e64e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406789/normal_5fe36746329f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476751/normal_602436a06acc1.pdfIn PDF document text
    • http://mefizilexofe.66ghz.com/fodunazifetiwatopakorudo.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/vQibqjf/55731495877.pdfIn PDF document text
    • http://nagesebaz.iblogger.org/ximutura.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/VgbhdQ5/world_market_coupons_discounts.pdfIn PDF document text
    • https://bojubuloxobepi.weebly.com/uploads/1/3/0/9/130969884/xanupewedagafoxozo.pdfIn PDF document text
    • https://sawolopu.weebly.com/uploads/1/3/6/0/136049845/fenujiti.pdfIn PDF document text
    • http://tajizomekoza.iblogger.org/39152825117.pdfIn PDF document text
    • https://cdn.sqhk.co/lusajiki/cbzjaur/mr_stickman_and_bullet.pdfIn PDF document text
    • https://mosezusimoz.weebly.com/uploads/1/3/1/6/131637881/6846493.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zoxokukazo.epizy.com/iron_man_black_sabbath_sheet_music_free.pdfIn PDF document text
    • http://nedepufeto.epizy.com/44929448771.pdfIn PDF document text
    • http://femasusatatovet.epizy.com/hindu_college_nagercoil_application_form_2018.pdfIn PDF document text
    • http://xunonevikonog.rf.gd/18744361948.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000baad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAAD 5028 bytes
SHA-256: 7099fe2fac63e51cf44512fe2d130c58f3734998dd6008f08cde4ee2dda9dd23
font_01_sfnt_off0000cba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA0 10000 bytes
SHA-256: fe6fd891fcf1fcc7123ba5767b3996a92fbb470dd2ce1359fedfdd87a5ed9053

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