Malicious PDF — malware analysis report

Static analysis result for SHA-256 54de281de8f04dd7…

MALICIOUS

PDF

83.0 KB Created: 2021-02-10 03:20:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: cad6e01d7bf3cac0be08f39075dfb1da SHA-1: 4e18daf6981e0cf4c11465c8bd1b8eb477b5eab2 SHA-256: 54de281de8f04dd79cdbe64e9e0205cb1d6e7eb2a46e94c8d76061e4a7b539ed
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://baarspo.ru/aws?utm_term=blender+shortcuts+2.+8+pdf', which is likely a phishing lure. The document body, though heavily obfuscated, contains references to 'Blender shortcuts 2. 8 pdf' and the authoring application 'wkhtmltopdf', suggesting a social engineering attempt to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/aws?utm_term=blender+shortcuts+2.+8+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469353/normal_6011a9dcd45bb.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/ujhibjd/nofozurewigogamubefajobeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501037/normal_5ff04609a2d2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_5fd7323cf374e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366031/normal_5ff43414be842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_5fe8e5f238612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448743/normal_602231a058e4f.pdfIn PDF document text
    • https://cdn.sqhk.co/xagegegozi/jigc5hc/para_que_sirve_el_bamitol_pomada.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/oiiics3/flappy_bird_download_for_ti_84_plus.pdfIn PDF document text
    • https://cdn.sqhk.co/nigulavax/fLqhiX8/waxatijor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5feafd258ee1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_5fdb8df721110.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/yidihhg/trell_short_video_app_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425487/normal_5ffea9adf080a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406782/normal_600f0d4154811.pdfIn PDF document text
    • https://cdn.sqhk.co/bifugudawesu/gihjeiq/soccer_penalty_games_free.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/X1jidc4/20139921533.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/resabomibogodaw/nccn_guidelines_appendiceal_cancer.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/message_app_for_android_2._3.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/full_form_of_mla_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/xasilizalatilat.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/vilapubojemazepat.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_off00010916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10916 5440 bytes
SHA-256: 9e59b5d1210bb3fb4fb7add6368c2b2513b03425adf49462af33008cbeaa968a
font_01_sfnt_off00011b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9E 10300 bytes
SHA-256: 5ff034031e3b9577bcb4605e817aca292984fb0b4c46c9924a2a485b4c880544

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