Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9741a67f7bc7449…

MALICIOUS

PDF

75.9 KB Created: 2021-05-07 13:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d348e1096a9c4e06cd46c9bd2b39ef6 SHA-1: b4330c5804385f4d8a040254a5e8d293c4f07527 SHA-256: b9741a67f7bc744982893b516281ffb139020899a02c7d670c1743a368f52449
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that uses a deceptive title, "Chandler Parsons injury report", to entice users. It contains numerous embedded URLs pointing to other PDF files hosted on various domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/278b78ea5dc967fdc25214a5dd6daa4d/jexivizidegugirowex.pdf
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/7ehqsld1ssuld4j47r5ulkrgs6/tugebaguwesiwumu.pdf
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/6991c25453273029a58d543c58224625/57583541613.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/7bpq02u1o2osetqohp8bo5ol6h/tutuba.pdf
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160738848035b2---jutopagafebipovomo.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160734a0adffa4---kefatoresonutekageb.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ouq5fgk4mq6u65v7o4lu13im6l/bulitesaxaxasevoremamu.pdf
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160750a28f2f58---33536540353.pdf
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f409f7270b---97433840683.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd4c9ebcd0---25665611710.pdf
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/df4174caba886f783c92cc76fdc8648c/32734800844.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc6a0e0fe7---fosimazekimixalogaregos.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/41v8jg4tdpja3cc9sp3o33ejea/zumurepeporimez.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9d12370f8---59509496649.pdf
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/na06mnl6tcm0e89m5e50sos9uo/ratedevivikevizirovibumut.pdf
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160856c92b0265---69626295805.pdf
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608aeeb8ead3e---57985497622.pdf
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/e5b7a35d05f1fa169db137e1c9552c89/wijepawixenewud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=chandler+parsons+injury+report
    • 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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddaa.bin
786bb1a2159531d57b350112fd6dcd41811ce527a47cedc17ea7e7ee0a588381		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAA 5132 bytes
font_01_sfnt_off0000ef13.bin
ed363713453ff6131b3c8ed72f4a6f2aee6fdb8fc444811172cd2ab97d74cf1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF13 10788 bytes
font_02_sfnt_off000113ef.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113EF 4324 bytes

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