Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be048c0805edd27…

MALICIOUS

PDF

64.2 KB Created: 2021-02-23 01:05:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5e0054e98ffd6de6ad39d62e2404aec8 SHA-1: 989e572e7f01ffbc88759913a503beb92a0a29db SHA-256: 8be048c0805edd2794a614f131d7ddf198e4b8c215750c726f05c81884d1f813
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, including 'https://leonvi.ru/123?utm_term=maytag+epic+z+washer+maintenance', which are likely used to redirect users to malicious or phishing sites. The document body, though heavily obfuscated, appears to contain keywords related to the lure, suggesting an attempt to disguise its malicious intent as legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=maytag+epic+z+washer+maintenance PDF link annotation
    • https://cdn.sqhk.co/wubumeze/jj4geih/87994058239.pdfIn PDF document text
    • https://cdn.sqhk.co/kevapaboxer/xn1ggm1/loop_diuretics_lasix.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/42903728724hbstk.pdfIn PDF document text
    • https://wanujonoguj.weebly.com/uploads/1/3/1/6/131607110/lekumapofitorerivuz.pdfIn PDF document text
    • https://subolamamojoga.weebly.com/uploads/1/3/4/7/134719430/sapesuneti-rusolen-javokufegejereg-dafimati.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/ddvidgi/kongregate_infectonator_world_dominator.pdfIn PDF document text
    • http://italiahot.space/fetetogabimivotowodal757ec.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/bgju9he/nodezisakimewazukareso.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/Vjnda8d/stupid_zombies_mod_apk_3._2._8.pdfIn PDF document text
    • https://topipanonotege.weebly.com/uploads/1/3/4/6/134679812/suxojubevedaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tedubifo/gDeHKQ9/stickwars_3_hacked_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/ggDhasQ/dogodojutotiwiniwukariput.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/idHz1jh/monkey_type_beat_roblox_id.pdfIn PDF document text
    • https://setejurisu.weebly.com/uploads/1/3/2/7/132740540/depukuberakuje.pdfIn PDF document text
    • https://cdn.sqhk.co/batovafakupo/jhjeyhi/kidelifiwefinawokimamo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bepapogijarepub.rf.gd/zorba_the_greek_movie_poster.pdfIn PDF document text
    • http://gedikoti.epizy.com/how_to_be_an_ideal_team_player.pdfIn PDF document text
    • http://dorikajiwewut.epizy.com/who_fears_death_nnedi.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_off0000bf03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF03 5564 bytes
SHA-256: d6b88eee498b7521a53e0770c32076d7e0d8bde1626b9b8734634d1f7eeab1f7
font_01_sfnt_off0000d1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FA 9976 bytes
SHA-256: bd94695ec2b8b7193ca39a53cdf5c4930916cb78bed3af15e703d0f6a29c5c7c

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