Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b39bb96856f8ea…

MALICIOUS

PDF

84.0 KB Created: 2021-02-25 12:16:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c93ba47f817b726e198da248ecfa39d6 SHA-1: 8b2b77ac1365735fdcda1822ac2b51d7f715bae9 SHA-256: 09b39bb96856f8ea82d7a261a80513c59094de08e9550570d08af79584748eb9
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL 'https://maypoin.ru/aws?utm_term=php+for+beginners+pdf' suggests a phishing or malware distribution lure, disguised as a document related to 'php for beginners'. No scripts were extracted, but the PDF structure and embedded URLs are sufficient indicators of malicious activity.

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://maypoin.ru/aws?utm_term=php+for+beginners+pdf PDF link annotation
    • https://cdn.sqhk.co/kigowabalo/cQwHqTM/76850699652.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/ronugemopagozitim.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/gjiq1jj/craigslist_advertising_jobs_los_angeles.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_601a1f6d2c659.pdfIn PDF document text
    • https://cdn.sqhk.co/jukunobegabe/ifgg1hc/honda_grass_cutter_machine_in_kolkata.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/xNhcjbv/professional_photo_editor_app_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/hIxb6DU/airport_tower_controller_salary.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/john_deere_240_skid_steer_parts_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/2bhcayY/halloween_ringtone_sms_sound_message.pdfIn PDF document text
    • https://cdn.sqhk.co/rebabafa/chbgcVW/56709368751.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/23487362684.pdfIn PDF document text
    • http://fudoviwil.mywebcommunity.org/diablo_nintendo_switch_release_date.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/vunizi/17587991146.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_off00010c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4F 5204 bytes
SHA-256: 78b7771cc88da764d670ec3354b843ed07a95c96143138dbb5fed25068c4d6e7
font_01_sfnt_off00011dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DFC 11140 bytes
SHA-256: f0fd9a1d8b7d5e9e84a3dda44d2e1a5f9b4487ca6438e23c6032ca9dd3350320