Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f7bef74d449275…

MALICIOUS

PDF

75.6 KB Created: 2021-07-16 06:43:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 41697fd7573406778a97a43b79c5fcfd SHA-1: ff0572f66b6ce22ae5e33015f192db03034d71a4 SHA-256: b6f7bef74d4492752814f0449dfe7df7d08f8f79bd07675f2fb78cc770f67ff1
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. Although no executable scripts were found, the presence of embedded URLs suggests an attempt to redirect the user to malicious content or download further stages. The PDF structure itself contains obfuscated data, typical of malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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/sq/ugae/~3/jEScUJLm1bs/square?utm_term=roster+smash+ultimate
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0a429fe14ba2d6e2fb381/1626383402104/cracking_the_new_sat_answer_key.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee63472af4c01978ff395f/1626235719201/tight_sharp_pain_in_stomach.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee8f9e588fb5669518e052/1626247070194/scales_chords_arpeggios_and_cadences.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_off0000c737.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC737 16792 bytes
font_01_sfnt_off0000df49.bin
c4ceb4d2784a0b5412ce189b1124072df7ced09a5adf5750c9b2ad09b8a91f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF49 16980 bytes
font_02_sfnt_off00010b5e.bin
a2be7be4a693fdb7f93563aa4dc11e6531ba7580a0d22a0d8f220b83adfc1da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5E 10416 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.