Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca5c3a46b1a1641…

MALICIOUS

PDF

78.8 KB Created: 2021-05-06 13:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 021914e1ce15f4742e6762727cdad101 SHA-1: 208378bc07d312831715bb4b8e017d96565deefd SHA-256: 0ca5c3a46b1a1641e299c9c7ff8ab02636092dc9989059a6ec390a30a74713f8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading a malicious file. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of external URLs suggests a download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://synerhu.ru/uplcv?utm_term=passenger+let+her+go+sheet+music+guitar
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8a4f74453---fetomuxugenadufizetali.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9f2367712---nokivakibazimiwif.pdf
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083efa96d29e---75244037131.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d9f23ae50---53475874041.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/dt6dph1eanakktjihvmlpofj62/feluwivewuj.pdf
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef043a500c---jazamadosaberexonaxoko.pdf
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea521ac4b4---66563666835.pdf
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/k0j0354a3medp317e2ksei5lo6/waxudofadiwetavisaba.pdf
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/o0tbpmju8t0q2f0oc7bbsqtp1a/fabefomevavuse.pdf
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/n45kmrbs2u8nue52ai44e149q8/28653557619.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608eae3f82a84---vemufajapa.pdf
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb4d211eba---90600458468.pdf
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/995ece6e40a33ac51b0b7e12a1c525f1/91863072240.pdf
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16091ae283dccb---dopoguwavoxosefobiroxepuz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f484.bin
60e457af8c17f98f6ad7d048f4adf1f5227b6f5706a0d6cbc4d2a05eb53bbe77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF484 5216 bytes
font_01_sfnt_off00010613.bin
bdd66a615dbc1ee8d6c5bd4e36beb3051ffd0a4db909e288b75cce17de776fed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10613 11876 bytes

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