Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ca6289a020bc1d…

MALICIOUS

PDF

70.6 KB Created: 2021-04-30 15:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0aa99aa0f3d7d57efcf08fa0edbba929 SHA-1: b0c02d2bf6eaff70814e32ba89e980ba90b39d7a SHA-256: c7ca6289a020bc1d3d8836a68e089f85587661ba05aab20a40426b973d4e5c77
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to suspicious PDF files hosted on various domains. The document body, though heavily obfuscated, suggests a lure related to 'Dominos application answers', indicating a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087e722f2c07---gimeninetoxufokumojumuxiw.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/12c3583c644d42cadb4e77e58c18e310/74482805677.pdf
    • http://abacusnancy.com/userfiles/file/59312039210.pdf
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084dfc1e1919---dugorel.pdf
    • https://www.rockfallco.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723deac0830---dawaxosobexekegeke.pdf
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608448a6d0e3a---rosoledewibizusi.pdf
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608797ee8965c---lijobod.pdf
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076eecf85f97---xejufofajetapix.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160769dbfb1666---90427943943.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4ba0057c5---luvutotaxuromi.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/cvr7au142grq6bcq3un8ioo8c7/28996930256.pdf
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/4de82a048c458df95af3d8214bc93712/51770587870.pdf
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/t9thu5jjl3h3dr7ih6pgj9ifa9/nogarozumomoxapiva.pdf
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/ek8t13sgnc0enigsfcnbdni58n/7982112884.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=dominos+application+answers
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d52c.bin
9bce7ab2f0e0ccdd943266e72b1fa3209fcde9fc0934d54d3bcb3c12f6f06e5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD52C 5172 bytes
font_01_sfnt_off0000e6c2.bin
a8045541c4873cfff76af0cf02a275c02f8f99bfc515dc14cf4f97317adc19df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C2 11688 bytes

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