Malicious PDF — malware analysis report

Static analysis result for SHA-256 f71e4b6d48b8b592…

MALICIOUS

PDF

70.4 KB Created: 2021-02-21 06:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 51652af80c3c4d85cecc284fde82049d SHA-1: 901dfdc8b55c63c46c7bb36cfc702d9bbe6909c5 SHA-256: f71e4b6d48b8b592c3e24b8c461a31a64f8f86748ff1cc01741679d3d6443e01
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://jottigo.ru/strik?utm_term=par-q+and+you+answer+key PDF link annotation
    • http://netzamka.ru/magupsyb7j.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/hfnWie1/underhand_lat_pulldown_muscles_worked.pdfIn PDF document text
    • https://cdn.sqhk.co/xexegapimuwi/ggieiap/3680885182.pdfIn PDF document text
    • http://totalcreditreport.info/adavilo_anna_film_songsej6ys.pdfIn PDF document text
    • http://bunakevogipo.iblogger.org/sotowatagibokas.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/lhawlid/94991699120.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/2haihVW/amaze_cloud_plugin.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/hhhg1hh/crowd_cartoon_picture.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/bjhicig/46371055384.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/mikibetiv/72730948047.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/contracture_management_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/puzzledom_apk_android_oyun_club.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/gurifafanetukurejajajod.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_off0000d7cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CF 5204 bytes
SHA-256: eb1ae0d83592e82d1948106a7aeb1f7a85238541c514fab0466d0cbbbc315c7d
font_01_sfnt_off0000e9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AB 10492 bytes
SHA-256: 8b260162f8032b721334ce9608cd70ef7d91ba513d86d1ad54c1f788de36304f

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