Malicious PDF — malware analysis report

Static analysis result for SHA-256 4459c13d9b0da8bd…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 06:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 92ca63ad69872e9b4579ab213e165210 SHA-1: 0cd00254b4df502894ec3ebb497a72e1e4136f7d SHA-256: 4459c13d9b0da8bd3fc0496334ea38cb9e37b0e58a1a150529e7f8c98763b9d2
166 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick users into installing software, a common social engineering tactic. The embedded URL points to a domain associated with phishing and potentially 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://zajinet.ru/strik?utm_term=ezdrummer+2+free+download PDF link annotation
    • https://cdn.sqhk.co/pewesopefim/hcgeghZ/city_car_driving_game_play_online.pdfIn PDF document text
    • http://carbags.site/45265177378hqzu7.pdfIn PDF document text
    • http://gbo.guru/punujeloxiraxo3w3b.pdfIn PDF document text
    • http://amorexpo.com/dr_seuss_beginner_book_video_green_eggs_and_ham_vhskbdau.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/gkgdmQJ/78903033908.pdfIn PDF document text
    • http://indir-kazan.com/revufunasekedigubiwez4v0w6.pdfIn PDF document text
    • http://fortysgjdk.fun/judiguwsl56j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/somamere/87453848683.pdfIn PDF document text
    • http://tadufaz.rf.gd/kavurajodufatuz.pdfIn PDF document text
    • http://fasajixibapa.epizy.com/alif_satar_cukup_indah.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/podajezumarejedig.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/kesler_science_escape_room_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_off0000e039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE039 5104 bytes
SHA-256: aeefb96e615ef845fe8563f9b438518ae566487d9d142c72dfadc9ef7b3c0a3a
font_01_sfnt_off0000f19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19A 10384 bytes
SHA-256: cc22cbb2fc6b92635d4b76102484beae8cc23910e0dca4e780e9cfdd552d8dad

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