Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ea685b19cbb7497…

MALICIOUS

PDF

157.9 KB Created: 2021-05-16 18:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12db85c41f1b25fec880784597503250 SHA-1: 65955d25e36cac1cf1a863f2fa85b630eead25b6 SHA-256: 3ea685b19cbb74979d70b3082408417951992d416d7c8765c43aa7b10ec3deb8
116 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains embedded URLs pointing to potentially malicious content, suggesting it's part of a phishing or malware distribution campaign. The presence of external URIs and a raw IP address in the PDF structure further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://medvor.ru/uplcv?utm_term=ciara+sotto+former+husband
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/2oqknnsa4gslq9lnbbamqtcntu/1190097774.pdf
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0e1b32c2d---12522848580.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160754ede83d40---90275810704.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16084033040c63---nakis.pdf
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/56d55mtij2orp5gnvhdmq0fq89/45335542212.pdf
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16098337c84fb6---wexejepavizulemafarax.pdf
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/64c9c02bcb367c53cbe994b5be392660/wamusi.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/0cc807890a2973adf98dcf386f913f37/xikibobeloloxulusokozurog.pdf
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16099f032eb654---86082447715.pdf
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/d310o7eckq7101eed0iv6o36db/42238845743.pdf
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/m7q2758rg53j1udtemac7p4ngo/luxanuzilefafinufes.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093c85ce2851---3866752804.pdf
    • http://fygl.net/uploads/file/121637424960.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/a8448858d9d89e247e186d29802c2408/nobutexozaloxox.pdf
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097f1bee9072---retolenanitopili.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00024e32.bin
3c3ba2bb0b1bbd585d74d2a529bd69d70bc7a873d2d86d882efa1c6e48a4dddf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x24E32 17700 bytes
font_00_sfnt_off0001f2bc.bin
17dba8c387f5520bd2bcbb1edccae71d73f8a56dc11881c6aaeddb269f8b32f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F2BC 5940 bytes
font_01_sfnt_off00020185.bin
2ec9d2fac713017c107c20675ca22f3d2d98652f08c52c5fd979db3ed0fb5f4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20185 5160 bytes
font_02_sfnt_off000212d7.bin
977d5b364eb14ed17297b5f3f5306473acce96ef9e8455a9f1b622f42a67ba01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x212D7 1676 bytes
font_03_sfnt_off00021b49.bin
3c46a8b7359fa84be267aee2f5fdc03b7bd2adab4d4da0bd639c3863651f40ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21B49 15984 bytes

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