Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb39d7b45a47744…

MALICIOUS

PDF

68.1 KB Created: 2021-01-09 16:00:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7acff172d7b7c7bd337df65db3ed0447 SHA-1: 9964f8b6ad6f1e4a1648529eda97b91b984016c3 SHA-256: 6cb39d7b45a47744ca48a1521d287e9678016add469e84521cfcb0f05a1aa85e
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 phishing or trojan threat. It contains numerous embedded URLs, with the primary one being 'https://traffset.ru/aws?utm_term=amplifier+song+video', likely serving as a lure to a malicious site. The document body, though heavily obfuscated, suggests a deceptive title related to an 'Amplifier song video', reinforcing the phishing pretext.

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://traffset.ru/aws?utm_term=amplifier+song+video PDF link annotation
    • https://cdn.sqhk.co/bofilewidil/qgeijhg/priyanka_zgirls_wiki_drama.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/3DnVA4a/nixijigoki.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/lhckVih/sms_messages_app_disappeared.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/nKhhDp6/rabevagubaruxabirivaleruk.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/QtQhcjb/dictionary_python_3_values.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/MHhejck/egg_wars_minecraft_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/hd0XRib/burivawufejivilodemerubob.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/00jehbO/can_i_charge_apple_pencil_with_iphone_charger.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417305/normal_5f9fe5331dfa6.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/e2bWgcK/guess_the_movie_with_emojis_hard.pdfIn PDF document text
    • https://cdn.sqhk.co/mibajufaneja/ejcjeHh/whitman_coin_collection_holders.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_5fedd6879a312.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/hgpdR4v/wumagakozotiv.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/winumigutam/anfibios_y_reptiles_de_costa_rica.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/kinemupiximelazevix.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/navuzitusasuzabu.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_off0000cd92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD92 5200 bytes
SHA-256: bba4df1f3758b9443e63d8f5657d792858cf34c06274cf0f123ec52eb1029659
font_01_sfnt_off0000df3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3D 10928 bytes
SHA-256: 555a60df1dd9ace3ed75eae60d3432e32d28dd55c10ff41b490e4287ec75eae2

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