Malicious PDF — malware analysis report

Static analysis result for SHA-256 890eee86e747108b…

MALICIOUS

PDF

78.6 KB Created: 2021-07-16 04:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b65b32d884c7f9cf8da3bf1a3d28a40c SHA-1: 78b38ebac3e8c0569dde8f6a510e62ecfe5054de SHA-256: 890eee86e747108b32ef98097d7979a2f9a2d1f0ec16ecfcffe3cb7c6b5effe9
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. It contains embedded URLs that point to external resources, suggesting a phishing or download lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used to redirect users to malicious sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/IdU8rIDf9lQ/square?utm_term=untitled+goose+game+how+to+get+the+farmer+to+wear+his+sun+hat
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f08fc5bbc67365750b0090/1626378181627/zugafadosen.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed94958b6fd7287614a967/1626182805269/3_mistakes_of_my_life_story.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e78515f36ca051df76e2ae/1625785621929/modals_of_permission_and_prohibition.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_off0000d39f.bin
225ebdd645c413bb1e4e1cc9f32645d93ecba49184ff40358a043fe47eaf0194		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD39F 15980 bytes
font_01_sfnt_off0000fcc5.bin
3893210301c7de7ccba4210117ed4a08160eb01961873e561d732ac788bb089c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC5 10992 bytes
font_02_sfnt_off000115f5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115F5 16792 bytes

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