Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef92368e080e3c5…

MALICIOUS

PDF

82.1 KB Created: 2021-07-13 23:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 997b50b4d31c9c0b63659320b91bd5de SHA-1: 0c6107386e9cd3146b46c522948800842fca4db0 SHA-256: 0ef92368e080e3c51ce6e3e1c834767f00b907a3b91f79feca921cb66f5d035e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'https://queure.ru/square?utm_term=oaths+and+declarations+ordinance', which is likely a phishing lure. The PDF structure and embedded content suggest an attempt to trick users into visiting this external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9438

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://queure.ru/square?utm_term=oaths+and+declarations+ordinance
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8221c217102653d620ae/1626112545693/download_one_piece_stampede_full_movie.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8e801aa30721e65ec1c26/1625876481213/i_have_blisters_from_sunburn.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8b5d01b38cc0852607a3f/1625863632989/soothing_rain_sounds.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed89f4bc85f73bac292860/1626180084991/the_hidden_power_in_humans.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edc386b0089c62dc3b4bbe/1626194822163/neponu.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec93c4bc6eee4b058f96f6/1626117060233/62721716380.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edc817e11d817478cf9227/1626195991513/is_sugar_a_strong_electrolyte.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed8c69b1b13d3c3c12f40c/1626180713327/46677561755.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_off0000df8f.bin
e489afd5ae1f68e44a29de4572a9e8a04e8634757769398a5ee190add1e75800		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8F 10492 bytes
font_01_sfnt_off0000f762.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF762 16792 bytes
font_02_sfnt_off00010f74.bin
e598a7df0a245776a09278ec5b655add9a0953c4f68f1b3e04e3014c7d502675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F74 16704 bytes

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