Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7de7839cf9a9e5d…

MALICIOUS

PDF

74.6 KB Created: 2021-02-03 15:01:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2d1093bd012c292890213ec901cc1ec0 SHA-1: 7759ab0e97990b2090a1b54f10a4868294e3ebe0 SHA-256: a7de7839cf9a9e5d223b9a60167a64aab7f0c47b157002322710107e4da6a1ee
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a specific detection of 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'https://baarspo.ru/123?utm_term=d%2526d+ritual+caster', which is a strong indicator of a phishing or malware distribution attempt. The presence of embedded URLs and the overall malicious classification suggest this document is designed to trick users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=d%2526d+ritual+caster PDF link annotation
    • http://lefuvaguvupawax.iblogger.org/barbie_doll_house_games_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/Gig2jeW/infiniti_racing_car_price.pdfIn PDF document text
    • https://cdn.sqhk.co/nafolekuge/V2w9bwb/rudenetejipa.pdfIn PDF document text
    • http://fefikaniki.22web.org/arch_installation_guide_efi.pdfIn PDF document text
    • http://fefebigaxef.iblogger.org/96769685248.pdfIn PDF document text
    • https://cdn.sqhk.co/xizefonuma/TibssWS/tibomerefajekipegij.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/4CidjfL/stickman_soccer_2016_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/heidurL/12474912005.pdfIn PDF document text
    • https://cdn.sqhk.co/nufopusifa/wztIjhd/janenavanarovelij.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/iD2Ziim/76620294024.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/ahjCje5/57785365531.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/rirusozo/west_african_mask_template.pdfIn PDF document text
    • http://tujatubaniza.epizy.com/27134451717.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/poxaduzavejatelowudeg.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/97772717975.pdfIn PDF document text
    • http://putiweg.epizy.com/chilling_reads_to_look_out_for_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/victorious_theme_song_piano_sheet_music.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_off0000eb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1D 4156 bytes
SHA-256: d9d9eb8b5a67a8494ca5a9593d54773c41ba913a17cb426b52e0a193c0b11448
font_01_sfnt_off0000f94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94B 10572 bytes
SHA-256: 235e0f0627311d81e7704af81dda8148e9dbc3473e7f055e237d0d6208aaf3a9

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