Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee2ee5a5a58aa66…

MALICIOUS

PDF

87.1 KB Created: 2021-08-14 12:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 3a0cb7146824aa0c441ab0e04c422ac5 SHA-1: 08120ae0bf64613cc692e8fc21e022fa00203bb9 SHA-256: 8ee2ee5a5a58aa663ee82bbe888d6fd0835ea8fa64ff962b2a7354a541029885
196 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of MFA lure heuristics suggests a phishing attempt to harvest credentials or session tokens. Multiple embedded URLs point to compromised WordPress sites, likely serving as part of a link farm designed to redirect users to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 7

  • 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.
  • 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://chcial.ru/uplcv?utm_term=how+to+stop+a+safe+from+beeping PDF link annotation
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/f968cf9dedaac14b04000b66d9162ffb/numudumexukenukaz.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/kifisujof.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/8841aebfb1efcb43b93374631ad3ba27/davuwazirulosojivikejifo.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/fbd5a879f70978469fa88b102cfc5455/48798496738.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d7ff0e933e---rakav.pdfIn PDF document text
    • https://colegiumaniucarei.ro/ckfinder/userfiles/files/43974588268.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/xuvebigodebuzu.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/7d31a1c2ed362fd6312ab87070fe5af7/ketasazulopilumujoso.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607674b81c031---josoviwalis.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160823f084a345---22787786585.pdfIn PDF document text
    • http://imi.vc/upload/files/javokepubunuxedamagiwixo.pdfIn PDF document text
    • http://winso.tw/userfiles/file/velunatedesuzakufoz.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d937437ad40---zikematudonave.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/f92be67ab4a1636151e67ef3d420a274/jubitagirijiwimo.pdfIn PDF document text
    • http://rungrawin-itt.com/userfiles/files/lubelujevojimovorotave.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a256ac7ac---dasedulapigogizoj.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/fijedizutavegijabiwenowuj.pdfIn PDF document text
    • http://jlm-kg.com/uploads/file/sujituno.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd672f14e99---49761978658.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/17285688654.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/70d1add5d5f38041146aabf6a04dffc0/19484869717.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/5d40cfdd324ca3523095d0628d8d3089/sejovojukedowarojekavomej.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/ffee1af0cc92afefcecff62c7df41f58/munijibema.pdfIn PDF document text
    • 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_off0000ef4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10761 10872 bytes
SHA-256: f4f08632595efc17b9adba777e0505b852d58628353ca2ffec76fbb3fcfb8328
font_02_sfnt_off00012055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12055 17476 bytes
SHA-256: 17d022ebca9b81afd0330ddd94ccc056561db1f1281ccc864fb0b8062fa001a7

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