Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6ee9a9e9ac4cdf…

MALICIOUS

PDF

73.5 KB Created: 2021-02-23 01:37:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0f0eeeee46c48017eff3eb04bb098d01 SHA-1: cb39f3aa123a68d26820f88c65b2b7847f96fa5f SHA-256: 5f6ee9a9e9ac4cdf873fc16190649b9eb3a682f9caa285bd1d33c6f324f809b6
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains and potentially malicious content, indicating a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a tactic for distributing malicious content or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jacksth.ru/strik?utm_term=prevost+h3-45+height PDF link annotation
    • http://gebuhrenfrei-mein.com/omron_3_series_wrist_blood_pressure_monitor_cvsezkmb.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/cBlD0YA/lezurarusimozozoligab.pdfIn PDF document text
    • http://titoto.xyz/tiraneworuzupifizepajomfp14.pdfIn PDF document text
    • https://cdn.sqhk.co/biwizalibe/jihchab/bravelands_book_7_release_date.pdfIn PDF document text
    • http://rejexinek.22web.org/2007_ktm_690_sm_owners_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/hgdhegj/50322556854.pdfIn PDF document text
    • http://shoop-fm.ru/wirewivudujf6k8.pdfIn PDF document text
    • http://jakartapro.xyz/46691913182y17s9.pdfIn PDF document text
    • http://natikolom.site/1742000576020oqo.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/nisoxow/abcd_2_movie_hd_khatrimaza.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/baby_doll_photos_hd.pdfIn PDF document text
    • http://faxunarin.epizy.com/58820627003.pdfIn PDF document text
    • http://pirafabitibabik.rf.gd/watermark_remover_software_for.pdfIn PDF document text
    • http://molutuganum.epizy.com/sunuketofomubedupizanoji.pdfIn PDF document text
    • http://vuzonulegi.rf.gd/sulonetisatudisopeveva.pdfIn PDF document text
    • http://vepejatudededok.rf.gd/57904154711.pdfIn PDF document text
    • http://zizizototumat.rf.gd/certificat_cession_moto.pdfIn PDF document text
    • http://ruriwujuvuwa.epizy.com/dragon_ball_z_games_android_app.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_off0000e1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EB 5172 bytes
SHA-256: 387b42a42dece2e925cd91b74e0863f9f71290711c5add742af857c2c543734a
font_01_sfnt_off0000f39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39B 11812 bytes
SHA-256: 649a68de68eaf24a97afafe0972835fc28e9843b885ab65eb13e1218083e00ef

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