Malicious PDF — malware analysis report

Static analysis result for SHA-256 70cb31312fa43fdd…

MALICIOUS

PDF

171.5 KB Created: 2021-06-29 19:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 405db58d544e3e27fe3a5b4b21279401 SHA-1: 7456224a04a45d51f64247cb3de48108c09a64f3 SHA-256: 70cb31312fa43fdd21a8001e850c441492a7e441fe7072fe49e81c96560667f7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs pointing to compromised websites, likely to host phishing content or further malware. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a pattern of using disposable hosting for these links, suggesting an attempt to evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9727

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fecirturizm.com/resimler/files/bunedip.pdf
    • https://airshow-bg.com/file/pajemole.pdf
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/0c28d662b58131d437a3f782ee50940f/pulodawedibenuwajumowi.pdf
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078dc962059a---11249820175.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/1736c1176015dde140764d90c39f8d5c/najumofutajedab.pdf
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160831156df188---61178070787.pdf
    • https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/wilepiromusojiguze.pdf
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/clhphs3bv7f80kpa6ltgkls8jr/tulesipufibifur.pdf
    • http://cornucopiafrederick.com/uploads/files/77393420936.pdf
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16086375e6c477---turewigomawubiwewezaxa.pdf
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/1cde4955d30ad7b86d1261341b374d86/86341258435.pdf
    • https://szud94.hu/img/sajatfile/files/80532734330.pdf
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/5412075163.pdf
    • http://coclub-us.com/ckupload/files/68731714181.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a445682adcd---30901973845.pdf
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094252e7acee---gufivajeletesesonabujo.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075de7cc9be7---67372660892.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d40a3ada155---fiworuzatetewof.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071c3ef0f92b---68986631805.pdf
    • https://bandai-k.com/userfiles/file/48591879698.pdf
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/bd7d6d4e133360f8968a46dfae77a9c2/6698549697.pdf
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6f0d0d72c---86926526308.pdf
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160885556c92d5---botufomozabegimivina.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c788bd296f---talibefibinox.pdf
    • http://aire-limpio.com/img/editor/file/puteruveje.pdf
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160873ba8d8771---jedarebe.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=portrait+with+hands
    • 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_off000241aa.bin
d1c65f72d75ffd97f1efbb8293122fb9c1672584ab1ce10712e3282dd22a8754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241AA 18176 bytes
font_01_sfnt_off00027128.bin
9e28818c1fad971fe8a3218ef7614a8382e94749be4dd30cedf2bbe2f37b4913		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27128 10252 bytes
font_02_sfnt_off0002882f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2882F 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.