Malicious PDF — malware analysis report

Static analysis result for SHA-256 60880635175c5dc0…

MALICIOUS

PDF

83.1 KB Created: 2021-06-07 06:04:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 557279b98e2ddd35cc14202560b6ff0f SHA-1: 03db2e62cefa97aa49d0ff4628314948b1128dc2 SHA-256: 60880635175c5dc0914a3c3c2ff6d47d9f303accc1018585e6341be9f0b0b4e9
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, with one prominent URL pointing to a site offering 'free download motorcycle racing games for pc', suggesting a lure for potentially unwanted software or phishing. The PDF's structure and embedded links indicate it functions as a link farm, directing users to external, potentially malicious, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://crysiq.ru/pbw?utm_term=free+download+motorcycle+racing+games+for+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388065/normal_600e65716d2ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471703/normal_60107180e17db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_6044743abcffa.pdfIn PDF document text
    • https://nakubiwakuja.weebly.com/uploads/1/3/7/5/137511820/abcf95.pdfIn PDF document text
    • https://libizewixowu.weebly.com/uploads/1/3/4/4/134432873/renevetilop.pdfIn PDF document text
    • https://pabarubuvu.weebly.com/uploads/1/3/1/3/131379718/silufu.pdfIn PDF document text
    • https://noduxulab.weebly.com/uploads/1/3/4/9/134901810/887642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_601ce76e8f248.pdfIn PDF document text
    • https://garixapevawena.weebly.com/uploads/1/3/4/4/134495328/3934495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478669/normal_6035365fb820a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rixepal.pbworks.com/f/can_a_keto_diet_lower_cholesterol.pdfIn PDF document text
    • http://lufokomarib.pbworks.com/w/file/fetch/144559569/how_to_report_moderated_mediation_apa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bdd39cb-2897-4ff0-ae26-347b734ad73b/53162313271.pdfIn PDF document text
    • http://dawijunegolo.pbworks.com/w/file/fetch/144422589/wugudomexerafesedekenusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64eb6b51-fdaa-4fe9-89be-24e51023806a/tovolebodiwifuzul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14148b02-e6c3-4f86-ad15-bf0cfcc9cddb/23156389228.pdfIn PDF document text
    • http://letonepamusi.pbworks.com/w/file/fetch/144464418/wordpad_notes_in_windows_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4709103f-2697-49f9-9f9d-7e967ec29316/how_to_turn_on_a_jetted_tub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c2f0df3-e6cc-4ce1-9bc3-842f6f078762/muzaxaxigiraf.pdfIn PDF document text
    • http://xuladejuzor.pbworks.com/f/hard_boiled_detective_fiction_characteristics.pdfIn PDF document text
    • http://fepewuwakow.pbworks.com/w/file/fetch/144510507/36806353592.pdfIn PDF document text
    • http://najapenoz.pbworks.com/f/laponakapagunawesef.pdfIn PDF document text
    • http://nomebazeregi.pbworks.com/w/file/fetch/144768216/lutifexij.pdfIn PDF document text
    • http://vulazojab.pbworks.com/f/49591767540.pdfIn PDF document text
    • http://kizisoj.pbworks.com/f/39985237276.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EB 5412 bytes
SHA-256: 4e422547601834c9d2a3ad55f0986244be926b7e0453ef3c1a07b3aaabb6d63a
font_01_sfnt_off00010c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C58 10612 bytes
SHA-256: 27fd8850d10e9c2f02c62f423c4e1e8b89c61a3529b4635d112a24e64ef5f02e
font_02_sfnt_off00013083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13083 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3