Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1439a7483729673…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 06:08:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a413d194ee146fbda5f00342c715b511 SHA-1: ec9251e56cc9b75901e334eff73847df46585938 SHA-256: d1439a74837296730becf0785cb54a954b76fb718f5cad81183176d8f148b540
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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/wb?keyword=d&d%204e%20adventurer PDF link annotation
    • https://cdn.sqhk.co/voduzetefir/4gegefr/fozenu.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/jdvfluy/arijit_singh_songs_2020_pagalworld.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426257/normal_5fc60582db9a9.pdfIn PDF document text
    • https://miwevedadig.weebly.com/uploads/1/3/1/4/131437981/b55d5abfe007.pdfIn PDF document text
    • https://xuxewisi.weebly.com/uploads/1/3/4/2/134235501/690a6b5d0210b.pdfIn PDF document text
    • https://cdn.sqhk.co/tedigedubemi/fFjiibu/rojubumut.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/english_grammar_in_use_elementary_fifth_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_60358a15ee763.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/what_is_the_darkest_minds_available_on.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/jefopanawimaze.pdfIn PDF document text
    • https://cdn.sqhk.co/banamasuvaj/n7Gheha/ninja_fruit_slice_game_free.pdfIn PDF document text
    • https://bawovaleza.weebly.com/uploads/1/3/2/6/132683088/zariwemojes.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/f4jeV7L/fantasy_dragon_model_kits_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403689/normal_5fc578226c682.pdfIn PDF document text
    • https://tigigedilopufam.weebly.com/uploads/1/3/5/4/135400960/jilaki_zegav_viwubim.pdfIn PDF document text
    • https://cdn.sqhk.co/gatidixon/iaijlgg/luzekijufasixitiv.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/5lhcibz/resurizuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rukosivujuxu.atwebpages.com/how_to_change_the_drive_belt_on_my_husqvarna_riding_mower.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_off0000e1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F3 4156 bytes
SHA-256: 5ae3bcc49c87f96444fbe3d11ff27db43b6aea299416b9f3d286273c64098da8
font_01_sfnt_off0000f021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF021 11272 bytes
SHA-256: c3d44abce2e8ffa2a9b03f0a2dec01f94866f0c6c250760fd20a283eb5f9db85