Malicious PDF — malware analysis report

Static analysis result for SHA-256 141d273d075ec9f3…

MALICIOUS

PDF

80.8 KB Created: 2021-04-29 04:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f905f46541f32a118dd78acf9845c447 SHA-1: 41d08df9ecc322fa62dd71bbb8381211686ac3b2 SHA-256: 141d273d075ec9f3ce136510675238918dc9651a243cd7618257d1ae82235230
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit the user by directing them to a malicious website disguised as helpful information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/strik?utm_term=how+to+repair+hp+laptop+display
    • http://reduslimitaly-official.website/muslim_travel_guide_busanycn7l.pdf
    • http://martans.space/rijerixegoe9f8y.pdf
    • https://cdn-cms.f-static.net/uploads/4369522/normal_6042dd5e9994d.pdf
    • https://static.s123-cdn-static.com/uploads/4380876/normal_5ff206a631aac.pdf
    • https://cdn-cms.f-static.net/uploads/4390374/normal_6060fe4927ae2.pdf
    • https://cdn-cms.f-static.net/uploads/4414869/normal_5fd5f886ec3b2.pdf
    • https://static.s123-cdn-static.com/uploads/4448986/normal_5febed2373d47.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bededuxotulapil/free_offline_amplified_bible_for_ipad.pdf
    • https://s3.amazonaws.com/wixanarer/acls_guidelines_2018.pdf
    • https://s3.amazonaws.com/baritexovopa/charha_de_rang_soniya_ve_song.pdf
    • http://gatakokuto.rf.gd/video_calling_app_duo.pdf
    • https://s3.amazonaws.com/mikibetiv/jimmy_choo_choo_song_mp4.pdf
    • https://s3.amazonaws.com/remufuzu/50877900894.pdf
    • https://s3.amazonaws.com/xoguwavosuje/the_redemption_of_althalus_movie.pdf
    • http://debagejusuwaj.epizy.com/nuxurexetifumijujekem.pdf
    • https://s3.amazonaws.com/wukevirenesu/junior_android_app_developer_job_description.pdf
    • https://s3.amazonaws.com/webipejonavuv/2005_buick_century_owners_manual.pdf
    • https://s3.amazonaws.com/wulagisi/8760190175.pdf
    • https://s3.amazonaws.com/tezofuretejom/rexogokegepedefojud.pdf
    • https://s3.amazonaws.com/werowibovezoje/86578097151.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fea5.bin
5a29a12e9478aa142c240c4f1aef454b95df4defc39ef117fa9884326bdbb94c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA5 5200 bytes
font_01_sfnt_off0001105e.bin
9e579101575f41f0d17126846893b1f698b71857bd50fcee5d9ffb3e8deba10f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1105E 11116 bytes