Malicious PDF — malware analysis report

Static analysis result for SHA-256 80dcddc27c4bbada…

MALICIOUS

PDF

89.5 KB Created: 2021-07-16 14:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c96f8c3c93614583c3d978d1a5e0d555 SHA-1: 7a3bb00a74c419a5dfa3ba1cdc17b43596209f80 SHA-256: 80dcddc27c4bbadaf72cb81c26c608e187e522df1088862f953c600ec1439d22
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. It contains embedded URLs, suggesting it may be used to lure users to malicious sites or download further payloads. The PDF structure and embedded content are consistent with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5959

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/um1bUVUAM38/square?utm_term=important+question+of+chapter+solutions+class+12
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ecd195789c146518e19fdc/1626132885478/boys_over_flowers_movie_download.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60efde083a4e3014a1c18d27/1626332680425/reporting_therapist_malpractice.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ede8b27ce58f02ed94fe9c/1626204338497/21953459479.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a9f384d3ab7bf4387789/1625860595261/suxogilafogarizegenaz.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_off0000fb85.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB85 16792 bytes
font_01_sfnt_off00011397.bin
25c39da5e9ee7db5aaa925bd8cdc362dbbe15b1d65e189dd41c6f95fb996499e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11397 17136 bytes
font_02_sfnt_off0001405d.bin
7fd4b89b25dd2cb5c751a4aa0b3ab59128ec57fcfbc24e3f3931c9666f375ca7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1405D 11112 bytes

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