Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb0f860183d3776…

MALICIOUS

PDF

73.3 KB Created: 2021-01-21 06:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 16dee43e8f1991db2f1ffe5788753fe3 SHA-1: 6f4abb9983c4270a125068cfb219d6c8a2368205 SHA-256: 3fb0f860183d3776bc253b9705a2508dea222be9559736cf9bff5597cae234eb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wb?keyword=atomas%20zen%20mode PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459035/normal_5febccda49200.pdfIn PDF document text
    • https://site-1168150.mozfiles.com/files/1168150/didi_food_delivery_driver.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5fa9a2ddcfe7b.pdfIn PDF document text
    • https://site-1168260.mozfiles.com/files/1168260/phage_the_untouchable_edh_tappedout.pdfIn PDF document text
    • https://site-1168511.mozfiles.com/files/1168511/business_continuity_plan_mobile_application.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474723/normal_5fece99596c03.pdfIn PDF document text
    • https://cdn.sqhk.co/pikukafil/ja9hdxh/21209600515.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/Nehijhb/solar_system_planets_saying.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5fa72b61a22a1.pdfIn PDF document text
    • https://cdn.sqhk.co/fekigimuzib/hdiehaS/dancing_road_color_ball_run_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_5fb02a49039d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemebikox.epizy.com/95150476858.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/bapomewofimevirewi.pdfIn PDF document text
    • http://kibululugavi.epizy.com/didataxowir.pdfIn PDF document text
    • http://molutuganum.epizy.com/11085484464.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_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 4880 bytes
SHA-256: 2051cda4fe42400db59e65b2b099790ee28c6875aa16ffd30a6e25f3eaf59b91
font_01_sfnt_off0000f3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CE 10784 bytes
SHA-256: 68c65ad8cab498cee2364c4a13f25c208aa3bd7d0a8b5cde16f412b66acbfb96