Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d949791903661f5…

MALICIOUS

PDF

82.1 KB Created: 2021-06-26 15:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e841bae8edddd8f1852220cc8c8727a1 SHA-1: 5d167cfe435f7f685c5aee0e612c104620b8f4e9 SHA-256: 9d949791903661f58122a382a63ed2c278b6e3f0d5c79ed5744f309dace37318
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, for being malicious and a credential harvesting lure. The document's structure and embedded URLs suggest it is part of a phishing campaign, likely designed to trick users into providing sensitive information by impersonating an MFA or one-time code verification. The presence of numerous links to potentially compromised or disposable hosting sites reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://lawrence-spruill.com/clients/42275/File/tidafunixonagibokik.pdf
    • http://cpgny.com/userfiles/files/wufigexasexopebukevoku.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2bedvherkptlc1g3f4vobm9s57/dabagivulojepewer.pdf
    • https://ebooksweb.net/files/file/73430027417.pdf
    • http://yorktownhs1987.com/clients/57482/File/10119498932.pdf
    • http://davidlbrooks.com/clients/868292/File/3460995709.pdf
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/3000e9312f87b36a424b65dd52eb47a1/rimaxaximipolifiloz.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/3a0545d9a5d5009064653c339fc82ccf/54770462071.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1607473f915928---kajolabevigoporole.pdf
    • http://alexlunacoach.com/img/editor/file/36398668636.pdf
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607710028ad6d---bitevukipixoximozax.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77b56ae835---50407756930.pdf
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b21c7884bc---nuvikapaxaxojegikepowijur.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ig2mgol60f191s5lr3hl7lon86/52825932490.pdf
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/8ukehav8fao5b74acqdctd0q60/guzulewijujib.pdf
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160788d1393bfa---zotafelobulenebi.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091c83136140---15699588533.pdf
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a01d8b7ff86---55789329983.pdf
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1acc4126d5---xebajomogu.pdf
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/73cdc33a2ff537d61469f0956477cebe/67436133881.pdf
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/jeotc72352eogp40ktrp7rep0e/40149788316.pdf
    • http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/251523155883.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607a237d29ec1---fijiparovulotigawo.pdf
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/1ol3ik5okicl95vv9qr9a9fei7/gagevufetugugusevi.pdf
    • https://bodegoncriollo.com/userfiles/file/51652195758.pdf
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/g35r2a39jueff53hfl7f1ojrfu/domugezunozu.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160829a60c6e60---xofirivawuzuwi.pdf
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c68b7b9845---12589538564.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=connect+printer+to+chromebook+wifi
    • 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_off0000de35.bin
858586f5abb891e74a1b171acd24385bbd7622779b36543f4c5731eede79b02e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE35 10716 bytes
font_01_sfnt_off0000f677.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF677 16792 bytes
font_02_sfnt_off00010e89.bin
dabbe9280dc1d0acf6fb19778e53f717d00fbc4d93f5f7a619fdbab005c996ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E89 16904 bytes

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