Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e468fe14cc0986a…

MALICIOUS

PDF

80.7 KB Created: 2021-09-02 00:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0eabd5a736afa03df995c3c6ec3e8541 SHA-1: 2c20ff2892466ba598e2d6667d46373839b6a43f SHA-256: 9e468fe14cc0986ac1184dfd579089d69d99517645cce5d70a00302a502ccc4f
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

This PDF file contains embedded JavaScript and numerous external links, many of which point to compromised WordPress sites. The 'SE_MFA_LURE' heuristic indicates the document's content is designed to trick users into revealing sensitive information, such as one-time codes or MFA approvals. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1610c9195d3860---nujepi.pdf In PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/d0331596f967422c28bbede508cefdef/98785899449.pdfIn PDF document text
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/5nq3cduq11ocbksf7qh78fp5e4/loserotuxirodefezesufabi.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/9vu61hs3t6gsl5is7qhp2a0tli/loriliwuledizetav.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d3f4b50a4---82875528840.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/1510679483.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/71087215195.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c79d4fe63---wowiwug.pdfIn PDF document text
    • http://agro-vostok.ru/userfiles/file/33844230663.pdfIn PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/lupirekovafasupawafuf.pdfIn PDF document text
    • http://kjphotocon.org/data/userfiles/files/vamixebasenitirigiw.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edee13b6618---61544631737.pdfIn PDF document text
    • https://chinatupai.com/web/js/ckfinder/userfiles/files/85590183691.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d77a42f2f7c---18249425614.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909e3c4ae54---34175341834.pdfIn PDF document text
    • https://jetaime-shop.com/files/gimusaxepokuvexe.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/f513ff152d7a341cb6c284f2a55eb872/17603373823.pdfIn PDF document text
    • http://abbuffalowings.com/uploads/files/28932472803.pdfIn PDF document text
    • http://www.dereformasenalicante.com/archivos/files/kinofakos.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/1tbnfq2ulb0f0vaivcrrdtaba4/46395072921.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/4a5c6f3bdb51470c47fe51b755f409ae/sujazesotizogin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=nps+s2+formPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD744 9984 bytes
SHA-256: 20b445bb1b11f82cb4383c9687c52ee270348f1340a69f33fcb1eea79a934f91
font_01_sfnt_off0000ed6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6E 17596 bytes
SHA-256: 1ba68cc143c1dd5a049c39c023423f7c5c0c6c727392591dcb8da9de8d0552b7
font_02_sfnt_off00011b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B01 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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