Malicious PDF — malware analysis report

Static analysis result for SHA-256 654fabaf0c4df97c…

MALICIOUS

PDF

84.3 KB Created: 2021-07-14 01:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b0b5bc7879706c659f912f0f5705c86f SHA-1: 532dc1c088ad66e66867a39615993daf423e5f53 SHA-256: 654fabaf0c4df97cd379a84e9b22bedddc52b4a8d694bfd786c68dd533e7bd96
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs and obfuscated content suggests it is designed to deceive users, likely for phishing or to facilitate a malware download. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5817

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/kVSxLQpkboc/square?utm_term=nicknames+for+macey
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee053c2e8a4a2aca7e545a/1626211644832/fapilesosedumodotoduli.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee0e6afc191471fc68ec7f/1626213994874/11389053022.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e910ebc91b61347ea30aae/1625886955343/popikoramalila.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed89be6ebf0d48ea90b7fe/1626180030558/62395371665.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_off0000e917.bin
e6485587a81f9a45cc042988ed2dd41ff3c96c0f3822b561d08f87d62d13bb86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE917 17100 bytes
font_01_sfnt_off000115be.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115BE 16792 bytes
font_02_sfnt_off00012dd5.bin
d4d565ea8eff632a627e9893e151841b275f66ddf3b30ef509890f6bbb4ebd4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD5 10536 bytes

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