Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e011fc8d37c805…

MALICIOUS

PDF

74.3 KB Created: 2021-06-10 05:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a6bc1410b88c3e2d839621edfc07d590 SHA-1: ebb9a01e0417c23d71ecb3460dbba827e7b85708 SHA-256: d0e011fc8d37c8054480992f0d0eec8b580aa07cf521ad01e573ad5b4fc87c6f
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, with one prominent URL pointing to 'pistant.ru', suggesting a phishing or malware distribution attempt. The PDF structure and embedded links indicate it's designed to redirect users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pistant.ru/pbw?utm_term=developer+mode+android+xiaomi PDF link annotation
    • https://sutowuvo.weebly.com/uploads/1/3/4/6/134685384/1086056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381737/normal_60403c13b6321.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369324/normal_600324d533cb9.pdfIn PDF document text
    • https://rabibenexu.weebly.com/uploads/1/3/5/3/135319922/zepodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459624/normal_603c253539f5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476758/normal_600c3feb580b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/19bb801b-71af-4226-a643-5b5c602c9226/6413226681.pdfIn PDF document text
    • http://fotowefufet.pbworks.com/w/file/fetch/144842169/black_ops_3_zombies_mod_menu_xbox_one.pdfIn PDF document text
    • http://lojapaveb.pbworks.com/w/file/fetch/144802938/vogaretarumax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3d48f2d-17db-4705-9424-18fa5de12f5b/c_programming_language_compiler_free_download_for_windows_7.pdfIn PDF document text
    • http://tejipufiwuma.pbworks.com/w/file/fetch/144851457/point_blank_tg_hilesi_nasl_yaplr.pdfIn PDF document text
    • http://vatojorisa.pbworks.com/w/file/fetch/144435492/7546879551.pdfIn PDF document text
    • http://pigedigasexu.pbworks.com/w/file/fetch/144670776/54154504266.pdfIn PDF document text
    • http://gazoridixilu.pbworks.com/f/gloomhaven_mindthief_card_guide.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/w/file/fetch/144792483/jutejewudejejufederawon.pdfIn PDF document text
    • http://tusoxefum.pbworks.com/f/71701028291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/937bfda1-b6f7-40b8-8cc6-fe268ef3bc86/bosepof.pdfIn PDF document text
    • http://pebegijopolo.pbworks.com/f/kosuxazuzorixododerofu.pdfIn PDF document text
    • http://ziriwuru.pbworks.com/w/file/fetch/144500307/ramefimokumebadulafop.pdfIn PDF document text
    • http://lagawiwefe.pbworks.com/f/how_to_install_cores_retroarch.pdfIn PDF document text
    • http://zelovoguvunu.pbworks.com/w/file/fetch/144427155/44772556078.pdfIn PDF document text
    • http://gogoporiwo.pbworks.com/f/41738894360.pdfIn PDF document text
    • http://gozuwef.pbworks.com/f/leon_gordis_epidemiology_6th_edition_free_download.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_off0000da42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA42 5056 bytes
SHA-256: 8218dd1f89bbb0bf2da97ea5cce852c85c22f77c3005645a36b09627466ec31a
font_01_sfnt_off0000eb65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB65 20412 bytes
SHA-256: c8fb6f88dd77a8e0146ee7bbe7f8f981bd20ae3740340662d0ee372007d0fd1d

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