Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaae1109e8b3eaa3…

MALICIOUS

PDF

173.9 KB Created: 2021-02-22 23:14:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e386b6a754822911c00e690a1883c132 SHA-1: c2c2f9fa41278673132d935c1aa5e14bd773e721 SHA-256: aaae1109e8b3eaa3646482d2c73a38b09647245dc77deb8f84de23fd23ff7b56
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document instructs users to install or connect with remote support tools, a common tactic for social engineering. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://jottigo.ru/strik?utm_term=what+are+the+4ps+and+7ps+of+marketing+mix PDF link annotation
    • http://kifavofo.22web.org/bowajibupesivogoxegokusu.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/gTfrghz/monster_raider_set.pdfIn PDF document text
    • http://losamaresufalu.22web.org/limejipujilopajopudogesa.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/jpicNa1/sirona_dental_inc.pdfIn PDF document text
    • https://cdn.sqhk.co/rigepasemapa/fujegiA/43796802903.pdfIn PDF document text
    • http://muruxilirafet.iblogger.org/70767239161.pdfIn PDF document text
    • https://cdn.sqhk.co/benadujeju/ghaDnje/fojipukik.pdfIn PDF document text
    • http://wajufogisabo.iblogger.org/nazuzefezo.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/dPvQyia/my_sos_family_emergency_alert_system_fema.pdfIn PDF document text
    • https://cdn.sqhk.co/kelifevaz/geOPPjg/20481138464.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/6iakgcc/87369387021.pdfIn PDF document text
    • https://cdn.sqhk.co/dozumapufa/fhiMQXI/zarotudagifot.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/e1jdTPQ/zagaboxamazerugux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kagowuv.epizy.com/t_shirt_quilt_pattern.pdfIn PDF document text
    • http://nenujogi.rf.gd/europa_report_rotten.pdfIn PDF document text
    • http://galikamot.epizy.com/49373526597.pdfIn PDF document text
    • http://walexesanub.rf.gd/lebededimatopenovofivejig.pdfIn PDF document text
    • http://tiwinifo.epizy.com/bell_bottom_kannada_film_song.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_off00026df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26DF0 5736 bytes
SHA-256: dff657f31f0180fca18a893065a579babd470d9a44057d851f227bf0f55e277a
font_01_sfnt_off0002816f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2816F 11996 bytes
SHA-256: e33ab24b36447be7feabddbc6ed452e2d8ad035d45693e6b0bab70665cd15121

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