Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87afc4dd7b8e3de…

MALICIOUS

PDF

83.6 KB Created: 2021-06-15 14:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-15
MD5: 8f1ddf0922527bf07458e38821bc1320 SHA-1: 540f6cb3e02e0b90e48ceec7826848a9ccada19d SHA-256: c87afc4dd7b8e3ded1130e52810eac4d50fce780d354b41b1997d4c91789cd3e
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains an embedded URI pointing to a URL that offers a 'Pokemon Go spoofer apk download'. This, combined with the 'Urgency / deadline lure' heuristic, suggests a phishing attempt to trick users into downloading potentially malicious software. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://queure.ru/uplcv?utm_term=pokemon+go+spoofer+apk+download+2020
    • http://azizolace.cz/images/file/diluporerigukad.pdf
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0a0659113---kigelezitaxila.pdf
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/20f774e1e7b5d66b0bb5a449bf55fbd1/65698416417.pdf
    • http://diclenakliyat.com/userfiles/file/pewebogakiteledolekujeron.pdf
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/k54fq3ubrlra2tp6vgf3jmgh21/zexadotaxokorevefukufijob.pdf
    • http://wittlich-luexem.de/userfiles/file/jaxuwiguxul.pdf
    • http://palazzodiaz.com/userfiles/files/33628796665.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ha1t1eadc6l7vk9anlq9cjakt5/77506882621.pdf
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/vpa1i8g8dbornseoj8vcgv2c27/65719999685.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/6a9380a4aa99d8810fcd7d9c36e6e24a/33853974867.pdf
    • https://alula.com/wp-content/plugins/super-forms/uploads/php/files/de4f6ef013f49a8aa0cdfa76ffe181f1/zazunakogofore.pdf
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/d3877dcb681bff453c1d9a698e45f99d/xizetupudoxosabakukimaj.pdf
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/b518b3122df57f0eec8bedb4589fb084/mizibajusuxokatexotij.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f334a393c---23861537749.pdf
    • http://jkmdc.com/aversystem.com/userfiles/file/27668812759.pdf
    • https://audit-advisers.com/userfiles/file/30559190753.pdf
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160baf6d420137---vinebupiluxudepisul.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160ac280261fbe---pajotij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ed.bin
d4ad3f107c7ebd716dbd0e9edbd2ba18b0450c716bd32efe60ab72c887ea47d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 5792 bytes
font_01_sfnt_off000105b0.bin
286a89e019bfd893f78493e8dff9bdd4a69f5f2ff4d31e4d64f14252e45d76c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105B0 10960 bytes
font_02_sfnt_off00012b26.bin
f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B26 16376 bytes

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