Malicious PDF — malware analysis report

Static analysis result for SHA-256 d171c2a7625fd8db…

MALICIOUS

PDF

85.5 KB Created: 2021-06-30 06:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 283bc9227eb69487e70d78337e873de8 SHA-1: ca98ebd5803ca85c5faadaab1dfc6db90ab3ee88 SHA-256: d171c2a7625fd8dbe180ddf9abf72c982fe21d394aab6ea04e71477304d8071e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing embedded URLs, one of which is flagged as potentially malicious by ClamAV. The ML classifier also strongly indicates maliciousness. The presence of embedded URLs suggests an attempt to direct the user to a malicious site, likely for phishing or to download further malicious content. No scripts were extracted, limiting the analysis of specific execution techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://aclamerica.com/customers/CMS-IMAGES/file/12175571090.pdf
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/f4918c8595bfa826d12419719093f9f5/80957224232.pdf
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/16070ca5ac42c9---40169399299.pdf
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8092f30b1---juwikuki.pdf
    • http://furniture83.com/upload/files/xukukanesa.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088973d295de---fidave.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/380819976d97e71b0213d6abcbd26c09/tubatewulefiji.pdf
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/917272b616faa1f2033b80d8525fb6bb/4217828117.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebc80cd2b9---bitumojopurifafonox.pdf
    • http://shreejians.com/userfiles/file/399214977.pdf
    • http://schmetterlingsgaerten.de/file/bezaxabatowalovizew.pdf
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b111d95ec98---ripemozuvibalizevalovabat.pdf
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160dbdacfbb341---3464947957.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/253mvemqmm041klll77lfie6o3/xumibuditojotepuveko.pdf
    • https://discoverthesky.it/file/dekize.pdf
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/37ji2vfbg1djaehr4cvipbdqrp/63464672567.pdf
    • http://alphabodysupplements.com/newerac2c/userfiles/file/gumubugusigelag.pdf
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16091dc334129e---13091280307.pdf
    • http://ibconsulting.it/userfiles/files/nuxovilunuminor.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/ca8cbedcf5591c233939a21e1b28f9a4/patemuwumow.pdf
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606db884c42c0---vowimuvorajavejerolipu.pdf
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/eb41d5b7dd44d96a95d19ca76a10e675/zerowozaloragogike.pdf
    • http://euro520.net/userfiles/file/16245686021401442185.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=scout+pubg+control+settings
    • 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_off0000e86f.bin
1dca89e6f7f19d8bafc4c2933282d90829050893d84a26d946b0be5e32533bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE86F 10704 bytes
font_01_sfnt_off000100de.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100DE 16792 bytes
font_02_sfnt_off000118f0.bin
c2a0e0e1001d429e1d65048ea63d3c8ef9ace82b72456c29982ad1033cc25158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x118F0 17640 bytes

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