Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1933c5f1626f4d…

MALICIOUS

PDF

77.3 KB Created: 2021-07-16 12:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 700ee41e793a8ae465a57f4d53d06fa2 SHA-1: b42742d2dc03c6b567406cd655a9397f07b66d71 SHA-256: 1f1933c5f1626f4d5ad550d66023bb0b94872e4afa629cb08625d3f7796e805d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to redirect the user to malicious content or download further stages. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/7R6buoffwiA/square?utm_term=blue+headed+macaw+price
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e78d5246a8e17713e03652/1625787730269/petudapo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ecef17bde79631d338e2f5/1626140439143/gopexapenejufepukatugude.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f11fd49014c44c528fbb08/1626415061050/45687802827.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e9399c37da2614570efec0/1625897372459/committee_of_permanent_representatives.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0b0ce840b985f2c514516/1626386640309/befawodas.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee113e2af4c01978f98756/1626214718476/62930450662.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee6c7b77e2cd4113f2c557/1626238075468/8621227259.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee49759c71001bedf6a7d5/1626229110085/vabojozikowebadifibe.pdf
    • 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://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_off0000cb2e.bin
2076d70065319d10ff75a8c9d11fa943fd64447c64e688a256db5fd6adec32fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2E 10528 bytes
font_01_sfnt_off0000e321.bin
bf40fbdebcb1bffb6e3ca02a5e74770c5cbbfbaca11e1c3cee0b2509c5cf7eea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE321 17556 bytes
font_02_sfnt_off00011147.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11147 16792 bytes

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