Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80d9e770579a811…

MALICIOUS

PDF

89.8 KB Created: 2021-03-19 21:55:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 76a76f348b8f77c67dc06c12ef26b5ca SHA-1: 9ffe5d2fc0275e67e04dba3ce0017fd464473ac4 SHA-256: f80d9e770579a81183bfe999dacc3a289979a09cf154971836bc7542e8b3d132
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL, 'https://ponafet.ru/strik?utm_term=how+to+calibrate+a+craftsman+digital+torque+wrench', suggests a phishing lure disguised as technical information. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

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://ponafet.ru/strik?utm_term=how+to+calibrate+a+craftsman+digital+torque+wrench PDF link annotation
    • https://cdn.sqhk.co/jabakujivim/1NNRLgj/givusimigowenum.pdfIn PDF document text
    • https://cdn.sqhk.co/miweguzeg/ibtH9ji/defejadolesuperikusot.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/phhvihj/epic_game_launcher_icon.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/jajb79H/feeling_alone_picture_quotes_tumblr.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/2uhd0z0/epic_race_3d_free_online_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tavedikovo/jifGThc/74391917730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446016/normal_6050657b4f6a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_6012190ddadb1.pdfIn PDF document text
    • https://cdn.sqhk.co/jozazixefuf/ccjghaT/download_stickman_falling_mod_apk_android_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_5fd662f5d48a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492600/normal_60543bed59074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384145/normal_600b36a5f1837.pdfIn PDF document text
    • https://cdn.sqhk.co/fotutubujuf/jdBsgjF/manual_skype_for_business_espaol.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/mgjgjhi/kitukililanomija.pdfIn PDF document text
    • https://cdn.sqhk.co/mevutaxisut/h5jf085/line_dancing_beginners_step_sheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5fd907066a263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393889/normal_601c9a0f3e6a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB8 5752 bytes
SHA-256: 1773cf592a05ff06f9d25d88cf5dd7cde03f589eaab52eadc0dde05ae40521ee
font_01_sfnt_off00013023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13023 12236 bytes
SHA-256: 863ac3279ceae9a30a96b55d14c93a54104edd258902af0cc12c62f0dd40a9b4

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