Malicious PDF — malware analysis report

Static analysis result for SHA-256 907a0a848428e740…

MALICIOUS

PDF

74.3 KB Created: 2021-02-08 07:21:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1965fb29357920590ba17904d99d4183 SHA-1: 5ef4d8c314271a6c72455626eca1906a36791164 SHA-256: 907a0a848428e7406a5c48393bb69689e19beb30e62a4b4cb9247c55374887a5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://baarspo.ru/aws?utm_term=whatsapp+app+for+android+tv PDF link annotation
    • https://fefedajukuda.weebly.com/uploads/1/3/1/0/131070841/5633527.pdfIn PDF document text
    • http://dobanojuwelog.22web.org/interior_design_flyer_template.pdfIn PDF document text
    • http://rotixumuzu.22web.org/caracteristicas_de_las_referencias_bibliograficas.pdfIn PDF document text
    • https://cdn.sqhk.co/xamizine/bkBbans/legapojawulirejev.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/jijh6ib/74576285988.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/7ibnRij/79992094906.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/2shjjfj/vlinder_life_dressup_avatar_fashion_doll_games.pdfIn PDF document text
    • https://wutodifutatur.weebly.com/uploads/1/3/2/8/132814097/1cb5f5ec2dd.pdfIn PDF document text
    • https://cdn.sqhk.co/tuponapalab/jcWgYjj/neet_challenge_questions_2020.pdfIn PDF document text
    • https://vaxamapex.weebly.com/uploads/1/3/4/0/134017084/1517006.pdfIn PDF document text
    • http://tejajugumoneton.66ghz.com/aziza_song_audio.pdfIn PDF document text
    • https://cdn.sqhk.co/povewepalu/IiaiaGw/play_bomber_friends_online_multiplayer.pdfIn PDF document text
    • https://cdn.sqhk.co/tovasodoj/zD5hbhf/14653307869.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://norisufa.epizy.com/73066330962.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/95896451639.pdfIn PDF document text
    • http://piwefijegiv.epizy.com/ancient_greek_roman_byzantine_costume.pdfIn PDF document text
    • http://vivizegijarugip.epizy.com/power_episode_guide_and_air_dates.pdfIn PDF document text
    • http://safavaxuvabobir.rf.gd/big_ideas_math_geometry_virginia_edition_answers.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_off0000e713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE713 5172 bytes
SHA-256: a4ad447d5536dd77ec4e6e773ab8f93d1ce048f361b9d119428a278b71747739
font_01_sfnt_off0000f8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BA 10392 bytes
SHA-256: ba115177fe6b4a4c81e70b61b14cc2df78ffcdbe2e797e0aee94b9f3dce38883