Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0fb158a755d008…

MALICIOUS

PDF

107.7 KB Created: 2021-09-02 08:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 80606c14b3f7ac4f58268cb2b76a717f SHA-1: 60c035f773ba56c93cc3ea75a14210c6a055eaf2 SHA-256: 0b0fb158a755d0084306b9daf73ec0d20f7a3ea8ca9a2ed009144a6287dce60b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs that function as a link farm, directing users to various domains. Several heuristics indicate that these links are hosted on compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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 https://drafthe.ru/uplcv?utm_term=200+rand+in+euro
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210808071032.pdf
    • http://cpk.by/ckfinder/userfiles/files/88757133031.pdf
    • https://rewaqousha.net/userfiles/files/25706179282.pdf
    • https://radmangroup-ye.com/rgfiles/file/mulujabosudapibatetugepe.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4c9896621---74167149176.pdf
    • http://vektorma.ru/uploads/assets/file/tazum.pdf
    • http://phuvuongcorp.com/luutru/files/51473112105.pdf
    • http://pascalparrot.com/uploads/assets/file/66170006743.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2bbc24a4e8---tegoritenewewawiwib.pdf
    • https://indikino.com/ckfinder/userfiles/files/milizap.pdf
    • http://mariautonoleggiomarsala.it/userfiles/files/nitasedimipovivetudin.pdf
    • http://elsekmont.eu/userfiles/file/28419711534.pdf
    • http://imapbook.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/gubuw.pdf
    • https://literie-depot.fr/UserFiles/file/75137425280.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd3bedb6c8---71745700056.pdf
    • http://k-yoga.org/file_upload/spaw_upload/file/20210602204224.pdf
    • https://stijsr.com/userfiles/file/lofewo.pdf
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/pu6u9csjg8t5oepub95supif4b/59464733512.pdf
    • http://woodwaysindia.com/uploads/fisamo.pdf
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897e1759d14---sewenifovegivelokalozajip.pdf
    • http://geoman.cz/data/file/xezoruvalorajinir.pdf
    • http://aryajob.com/user_upload/file/pejeg.pdf
    • http://stewartreunion2020.com/clients/2/2a/2a0d9dcdd57715375c9f4393c24df0f2/File/ferafegap.pdf
    • 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_off00013921.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13921 16792 bytes
font_01_sfnt_off00015138.bin
4597e2f169d47f5f3d78385a4f46b0a7e9671e4abd3e23ecf829f0d09fbbd8c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15138 10176 bytes
font_02_sfnt_off0001680c.bin
3034ff7995d69dc2621fc26b68b66f71c4d9f8677ccc61bdd0c20ba717467244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1680C 21368 bytes

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