Malicious PDF — malware analysis report

Static analysis result for SHA-256 69cea47eaf261dff…

MALICIOUS

PDF

70.5 KB Created: 2021-05-23 07:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f77c6aedede2b0eb6fb7357ad8fe67cb SHA-1: d19c4de0cb916cb84dc179d6b1ec9b0a596f5bc9 SHA-256: 69cea47eaf261dff53761bf6d25d2f83c5e0d04522200be3ea0ea391eaa4d0c0
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, many pointing to PDF files hosted on potentially compromised websites, suggests a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further malicious content.

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 http://amadpich.com/userfiles/file/15425810208.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926fc818e49---62443850400.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608775bb27f8b---leloxilisobezuwapawud.pdf
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/acb1973957c8dd9ffa439754e5b02510/36491045334.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddf8bd2063---bazejut.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160854fe7beb73---puvuraxujepixesimomepud.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c6bfc31bf---84624319758.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/b5f6c340d15485b27c3516719f41feb8/51092040649.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/492ed71c28f953264dba66b285699292/kavisesejusubasireneke.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb3a2df99a---23172798813.pdf
    • http://novussiteyonetimi.com/uploads/file/xenobil.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/d8b79a6f159e08c8921569609f449505/90421648944.pdf
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609298bb4a1a8---lewakiropekagi.pdf
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/cd70a55e2cd24dc5f82aca6cc2839e6e/97524385639.pdf
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072897d124ae---kujiweb.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a926abe6073---38085298657.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=hypertension+latest+guidelines+jnc+9
    • 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_off0000d5d7.bin
58dd369a03ef89994c00718211d91185423611e777fcd4513d52711d005302cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D7 5536 bytes
font_01_sfnt_off0000e8c3.bin
f4cfa64b3668084382f250c158b6995dadbcf7333b47eddba86c6efb242a0abf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 10696 bytes

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