Malicious PDF — malware analysis report

Static analysis result for SHA-256 047dab8fc1a65296…

MALICIOUS

PDF

77.1 KB Created: 2021-07-18 09:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 35c8c79de94e4b17d4337fb7b3fbcc5f SHA-1: 5ca3c64b4a04d4cdab168043b662a13e74cc8eda SHA-256: 047dab8fc1a65296e5b24515d6954d91eb3de512d180b21c8dc39620789bd761
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing attempt. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards malicious intent, likely involving social engineering to trick users into visiting a compromised URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

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://feedproxy.google.com/~r/sq/ugae/~3/5VO7y1TeAqQ/square?utm_term=positive+word+that+starts+with+the+letter+m
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e96024f4fe78435a3c786a/1625907236373/95681087705.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecd2c5224c4351f8faad93/1626133189459/44691800245.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eccd2c21140c20d8545b7f/1626131756488/fort_myers_beach_trolly_schedule.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f29fe736db646251987d6f/1626513383518/non_solicitation_agreement_sample.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec92a7e07849485499acfa/1626116775533/ccnav7_introduction_to_networks.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f34eb42e59700d3e5e250b/1626558132239/wemivogubosibikewuride.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f376d9668793736d3362b3/1626568409416/kuvixubewuxusola.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_off0000cc6d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6D 16792 bytes
font_01_sfnt_off0000e47f.bin
7b388355913c07590efd05607793d98256863051e02dd70fd0600db2d5e7d104		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE47F 16648 bytes
font_02_sfnt_off00010ff3.bin
f6bbfb39cacd9ec7aa93d0fddec176f62b6328c9fd44ef3bbf9ae9c934b3f0f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF3 10564 bytes

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