Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c4aa7819f4b13fb…

MALICIOUS

PDF

69.0 KB Created: 2021-03-02 22:33:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ada9a46da349bcfe9eef430f6a881ac6 SHA-1: 7e41303355ff9affca953abcfeb976d0de999ea9 SHA-256: 0c4aa7819f4b13fb9b0f658f594983c08db5457b7ea19a3d50802a73a01db305
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, suggests a lure related to 'reiki symbols tamil pdf', aiming to trick users into visiting the malicious link.

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://fokemale.ru/strik?utm_term=reiki+symbols+tamil+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380380/normal_602f7ff5da915.pdfIn PDF document text
    • http://qlemelest.online/wifodivoluxaxiluvoxofuselg04q.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/zugokiguruwowonac5n42.pdfIn PDF document text
    • http://cmb-societe.com/pannes_diagnostics_auto90htp.pdfIn PDF document text
    • https://cdn.sqhk.co/lowixadoges/jTrja1n/kikinolomuki.pdfIn PDF document text
    • http://b0xberry.online/tulezakulofibiuqj1q.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/vuzufexarevima/brothers_video_songs_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/bmth_sempiternal_album.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/malayalam_movies_mp4_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/vertigo_movie_dual_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/81497559366.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/21299312030.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/begukinebisur.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/45632841737.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_off0000d18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18C 5404 bytes
SHA-256: 66e8a009ed4f44fdb5a6bc16411fdc1ca993609c94b2b68798770f426421b8c0
font_01_sfnt_off0000e3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EA 10344 bytes
SHA-256: 2dc181bfc541ee5b160577f67322716e1ccc046e092299d1679abf7cad82d8a2