Malicious PDF — malware analysis report

Static analysis result for SHA-256 c307b77b95ee1672…

MALICIOUS

PDF

75.5 KB Created: 2021-07-14 00:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 999a6471a84028ed756877c2ccccdb7d SHA-1: e7bccb46990dda6a871df10124a4fa6e651d5717 SHA-256: c307b77b95ee16725b4c24622d72caa5a0f795a4e0e4335c438e323658d7ad08
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that points to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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://crysiq.ru/square?utm_term=how+to+find+a+circumference+of+a+circle+with+diameter
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee00f8670c344ea760a657/1626210552658/how_to_read_message_request_on_messenger.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec911c11a746407a426999/1626116381060/28314424681.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e897d6d1513b1e6cf76559/1625855959018/how_many_calories_in_bottle_of_pinot_grigio.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecd1888cc5f05e71daebb7/1626132872917/c_corp_meaning.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edd41c2799685454f802b3/1626199068286/19690619464.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_off0000c0d6.bin
0db709f4218dc070ea68330320b3d8aae8c95c1ef712aa71b852377ae4d12c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0D6 17544 bytes
font_01_sfnt_off0000ef49.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF49 16792 bytes
font_02_sfnt_off00010760.bin
9a9b521647820e319cd4a986bfc56656aa3ec44758302d40d9a1a2f26219df26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10760 10752 bytes

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