Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c28a3afefbbb1c8…

MALICIOUS

PDF

79.0 KB Created: 2021-02-28 13:25:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24fc3ca4232aedb562ed18b2743258a9 SHA-1: 54073bb59d7afc41f0680439cce96f4dcf291e39 SHA-256: 2c28a3afefbbb1c8e66831e413a7f5a1c7fe41ca75925695050468fba25c5c85
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI pointing to 'botokaw.ru' and the 'SE_URGENCY_LURE' heuristic suggest a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF format and embedded URLs are commonly used to deliver malicious content or redirect users to exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://botokaw.ru/123?utm_term=corsair+k95+rgb+keyboard+type
    • https://cdn.sqhk.co/xojapafe/Ujcgfjd/pudosudizilo.pdf
    • https://cdn.sqhk.co/nifodotiriru/BLhiXN1/article_spinner_and_rewrite.pdf
    • https://cdn.sqhk.co/zifeduwa/jjDjbmx/hot_wheels_unlimited_triple_loop_kit.pdf
    • https://cdn.sqhk.co/bitaxukezor/glhjeyZ/temple_run_2_game_play_download_pc.pdf
    • https://cdn.sqhk.co/boguzivipel/oT24whe/febivagux.pdf
    • https://cdn.sqhk.co/juxefirapuf/ia9iahc/personal_obstacles_examples.pdf
    • https://cdn.sqhk.co/rabawula/esigLhc/wexonu.pdf
    • https://cdn.sqhk.co/jopubelo/e6jdlgh/24985058093.pdf
    • https://cdn.sqhk.co/noxavuris/PqggCii/tapalu.pdf
    • https://cdn.sqhk.co/dibirolinu/hejd4jb/studying_amino_studytee.pdf
    • https://cdn.sqhk.co/xegapanasa/fFuTgf6/pros_and_cons_of_dictatorship_articles.pdf
    • http://sosyaltakipcipanelin.com/the_art_of_seduction_summarytn9c5.pdf
    • https://cdn.sqhk.co/vorowobenune/gCiaNhf/can_you_crossplay_among_us_mobile_and_pc.pdf
    • https://cdn.sqhk.co/najafizox/gLEuNOP/nebekeragaxurimu.pdf
    • https://cdn.sqhk.co/limiwebu/hghf9hb/gujisalij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jadaxanesutav.epizy.com/brain_and_behavior_eagleman.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e1.bin
8dcf5e8ab4c82892ee0685a98ac0a588e2096b7e9ce7d79df6db81a717641637
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E1 5388 bytes
font_01_sfnt_off0000fc45.bin
6c33cae2ec6ad4ffb2f93cd2ff1c1ae405848d01ae4d994d291dc5f8291a54c3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC45 10776 bytes
font_02_sfnt_off00012114.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12114 4324 bytes