Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e881a91461195e…

MALICIOUS

PDF

169.5 KB Created: 2021-05-07 18:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b3a81a786d077bfc234bebf67eb959e3 SHA-1: 50b9ef5ba749cb622224fc8b3828cfc274bb8eaa SHA-256: 93e881a91461195e1453361af39d6b6c4e43bec0d0def3817e7bbf3748e39477
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://soxebez.ru/strik?utm_term=download+driver+hp+laserjet+2100%252Fm%252Ftn PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454684/normal_60463ae732041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417025/normal_5fd0b9a672806.pdfIn PDF document text
    • https://cdn.sqhk.co/tobepeliv/IMTjiha/34962429175.pdfIn PDF document text
    • https://cdn.sqhk.co/dopebuxoz/igGeghG/gokazakoposomi.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/D9hewhe/best_race_car_track_for_toddlers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415080/normal_605b19e6e8339.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416802/normal_5fca4c8b8f7f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454541/normal_600656959346c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481157/normal_6067670450970.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/Cibjbgg/35576062393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462982/normal_5ff76fc08c461.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/savifin/tezokaxinosemufeditape.pdfIn PDF document text
    • http://rowodebifofida.rf.gd/define_elastic_and_plastic_deformation.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/fresh_off_the_boat_theme_song.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/39392802349.pdfIn PDF document text
    • http://judafigot.rf.gd/daily_guideposts_2019_large_print.pdfIn PDF document text
    • http://sosozodazu.epizy.com/dedewuxosek.pdfIn PDF document text
    • http://pusonaduxani.rf.gd/biodiversity_action_plan_for_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/marriage_biodata_format_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/resident_evil_4_ppsspp_cso_file.pdfIn PDF document text
    • http://kiwaxebaka.rf.gd/seventeen_adore_u_album.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_off00025b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25B26 5788 bytes
SHA-256: 7c2babe60c37f6c69db030b8351f0398a398b0fdd228edcabba2c20274011b96
font_01_sfnt_off00026ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26ED9 11960 bytes
SHA-256: 5cac20da41ed37c9ee0529726ff21edbd076ce02383a92e79aa788e7ca64c5d3