Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fcc7ee6a5e37b07…

MALICIOUS

PDF

85.3 KB Created: 2021-07-14 03:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ff89260c76fcc61934dabe4ddd1d800a SHA-1: f8e360fd28e57360896faaaa75d138c0be4aed19 SHA-256: 9fcc7ee6a5e37b07ac26a161ea432cf817c7a714c93e3ca5e5423b03d6a07424
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://irlanc.ru/square?utm_term=a+quiet+place+2+watch', which is likely a phishing or malware distribution site. The PDF structure and embedded content suggest it's designed to trick users into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6393

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://irlanc.ru/square?utm_term=a+quiet+place+2+watch
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edf9ada9aa746350cee065/1626208685825/strength_on_interview.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8d0d438670b5817c46818/1625870548464/bivobufurojefobuxa.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8677d0c43fe23627e773b/1625843581637/vegavutezesukasewaz.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9021ecc7c08645925a437/1625883166480/not_gate_using_nor_gate.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca81d3080d76c7a545d25/1626122269851/44214942578.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8b4cb30df454a8228246b/1625863371177/is_over_a_preposition.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d518.bin
b930779237c381ad6bf6348eb73e36fcf13c99cad376f1302f3b4deb46f920cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD518 17684 bytes
font_01_sfnt_off000103df.bin
3ebad04e6c0836a133312ff2f87b2c01eb7eac2ad5b627cc432930e9f9a47d5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103DF 10412 bytes
font_02_sfnt_off00011bb9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB9 16792 bytes
font_03_sfnt_off000133ca.bin
6d636ebcb28a43c11a0b96216d988d0aaa25e428b847d4e039b2a2a6b6e27b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133CA 16068 bytes

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