Malicious PDF — malware analysis report

Static analysis result for SHA-256 45799b8c35fb1821…

MALICIOUS

PDF

82.7 KB Created: 2021-07-14 02:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 82502d4c8d713e5f45a23c3ce6d9dec5 SHA-1: bd77874369f2c3bddb44f506eb599bc072f4fd9f SHA-256: 45799b8c35fb1821a39581c4d842e655f139ccb2a158a87858fe0599dc74cd51
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'ketchas.ru' strongly suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the ML/ClamAV detections point towards a malicious document designed to trick users into visiting a harmful URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8440

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://ketchas.ru/square?utm_term=shikellamy+administration+office
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee2070df3d323292ce70d1/1626218609124/xilivemor.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e84891f87ec6517a5a2bd7/1625835665707/petikozutagisi.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec95b7f918372873886649/1626117559102/voxavaxinekawanasudivup.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e90437309bd63f3d84f2cc/1625883704034/33500377870.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee1ff5c27d1e40a5480d18/1626218485622/43126366759.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d78c8c00971856071e9b/1625872269029/pavejosadag.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_off0000ddf3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF3 16792 bytes
font_01_sfnt_off0000f605.bin
648bcff5330ad304eb802eac5fad6894b843b45a437536e8d8ea35580a848aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF605 18028 bytes
font_02_sfnt_off000125ad.bin
017cb2be9d87ab360efa86e78c8bbd91b6747b08771fa3653db5a62aa119f8b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125AD 11020 bytes

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