Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aaa30c054b304ce…

MALICIOUS

PDF

75.0 KB Created: 2021-07-13 22:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 50192719a5fd2c43b492674774821971 SHA-1: 63d2bf2d9ac9fdfa1e81b4bf322c9a7b636b5ecd SHA-256: 7aaa30c054b304ce0db8e7957fcfe8c20706305714b2eb52ec1d18bac5099e25
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'coretry.ru', which is likely used to host a malicious payload or phishing content. The PDF structure itself shows signs of manipulation, such as duplicate object bodies, further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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://coretry.ru/square?utm_term=how+to+fly+in+minecraft+survival+mobile
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec80d20cf33f708d7a1879/1626112210782/fekatanuvevadivi.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e95d63c91b61347ea552ac/1625906531732/bomeguzixaxifibux.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e802345c1b846003404f08/1625817652925/all_two_letter_words_in_english.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed88a73b21860fe6729e26/1626179751431/62337784689.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e79b27a3609a707ba8905c/1625791271659/how_to_check_if_instagram_account_is_private.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_off0000c539.bin
24808b2c5bda5b64ee6994fa72a9dc72604077c26412f0c03de2094fd1fc6e0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC539 10996 bytes
font_01_sfnt_off0000dec7.bin
18f976918560f333bc28c2d0f7ed5d965e7f2daf987d3bb8507246913e3e8d3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC7 15908 bytes
font_02_sfnt_off000107df.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107DF 16792 bytes

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