Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cee150878207f2d…

MALICIOUS

PDF

72.5 KB Created: 2021-06-12 04:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d0925c9631f1d510229f66a627ad809c SHA-1: 4135c1c94aa87a1e30343a4543c40957bb4cd617 SHA-256: 3cee150878207f2dd2fe5b04ad6b1624c020e758df6b5b59cdd620420101f05a
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, with one specifically pointing to a URL containing 'god+of+war+psp+files', suggesting a lure to download potentially malicious content. The presence of a 'download button' heuristic further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/pbw?utm_term=god+of+war+psp+files PDF link annotation
    • https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/c09a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465151/normal_5fd61ff301136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_6015226a5fe9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465400/normal_60be7b5ec73ac.pdfIn PDF document text
    • https://wiraxupafetob.weebly.com/uploads/1/3/2/6/132696263/1060765.pdfIn PDF document text
    • https://wexipemeb.weebly.com/uploads/1/3/4/8/134860193/kawiniropofisanaxifo.pdfIn PDF document text
    • https://dobojadu.weebly.com/uploads/1/3/2/7/132711966/3113640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424985/normal_605dcf02bc485.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jowukon.pbworks.com/w/file/fetch/145081530/jilatefinulikajofafewukav.pdfIn PDF document text
    • http://zekapotog.pbworks.com/f/tere_bin_nahi_jeena_mar_jana_dholna_dj_song_download.pdfIn PDF document text
    • http://tusawijer.pbworks.com/f/34745843995.pdfIn PDF document text
    • http://tosuvop.pbworks.com/f/how_to_do_bible_study_for_beginners.pdfIn PDF document text
    • http://jakomija.pbworks.com/f/3_day_potty_training_method_not_working.pdfIn PDF document text
    • http://ronuzexem.pbworks.com/w/file/fetch/144428010/como_dar_robux_en_roblox_a_amigos.pdfIn PDF document text
    • http://fevuxowina.pbworks.com/w/file/fetch/144673122/tutorial_photoshop_cs6_pemula.pdfIn PDF document text
    • http://davusavesasi.pbworks.com/f/how_to_setup_universal_remote_with_samsung_tv.pdfIn PDF document text
    • http://sijomirurefi.pbworks.com/w/file/fetch/144460779/gubivinomasivegunef.pdfIn PDF document text
    • http://fokurid.pbworks.com/w/file/fetch/144674709/how_to_get_minority_certificate_online.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/f/sefalurixeluzezoronimat.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_off0000de4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4E 5160 bytes
SHA-256: 21e105320b03895d118122ac872e06acd119b22ed5e12c3f3866cea90ca308ff
font_01_sfnt_off0000f003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF003 10772 bytes
SHA-256: 892a476db6b63233d2b5fd22374d5c0ed9aa33bc21ec528c5a306b231187ab67

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