Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e70d2611ee28dd9…

MALICIOUS

PDF

131.0 KB Created: 2021-02-28 09:16:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 17301cbb3056356c50d633e9204252dd SHA-1: 2c6f632f510b4e29b35ae9bb724d1a2ed50873c9 SHA-256: 0e70d2611ee28dd9fa8fc710494e48823bc1ca7d595c1c3f3aa3baff6fa7305d
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains and acting as a link farm, a common tactic for phishing or distributing further malware. The presence of external URIs and the link farm heuristic strongly suggest the document's purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/strik?utm_term=2004+chevrolet+malibu PDF link annotation
    • http://kinorio5.xyz/115518421957x3tm.pdfIn PDF document text
    • http://jawuzoruba.iblogger.org/anorexia_recovery_skills_workbook.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/43142193054.pdfIn PDF document text
    • http://joy-todays.online/toro_model_20016_parts_manualqfcx3.pdfIn PDF document text
    • http://avto-trokot.xyz/dovuzudoxavuribifavalsp0sb.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/dark_sun_gwyndolin_cosplay.pdfIn PDF document text
    • http://steelsho1.club/basara_2_apkvxp53.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/sokozovafawofuge.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/wuruguxelesurux.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
    • http://lupewozer.rf.gd/how_do_you_smoke_a_ribeye_roast_in_an_electric_smoker.pdfIn PDF document text
    • http://fugukewuxituz.rf.gd/52136504742.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/pozowelenejaduxanetoxisov.pdfIn PDF document text
    • http://megokog.epizy.com/vetegiwisapali.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB38 5104 bytes
SHA-256: 6c94ca91b27503da5379424daadd3f05b602ac7b8a8549cdf71e13a44b00b7c9
font_01_sfnt_off0001cc90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC90 10768 bytes
SHA-256: bad3258dbb08a74707d2a117241f7e0226ad4a8ea588f87c68503e3aa1736b93
font_02_sfnt_off0001f0ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F0FF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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