Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc67f0c5c8c9596…

MALICIOUS

PDF

84.2 KB Created: 2021-07-04 03:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7f425ea57041e2eed90ce5abae26088d SHA-1: 3279a34a8cc3e87eeb1b15b50be65af1b4c00279 SHA-256: 7fc67f0c5c8c9596b559e7a149429d28c5db4314c7ec9e5ccbc13aeac6b306b9
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a link farm with numerous URLs hosted on compromised WordPress sites and disposable domains, indicating a phishing or malware distribution attempt. The document body is unreadable, but the heuristic firings strongly suggest the intent is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/9dd21334292736401cb487bc521b131c/webenomusakubakir.pdf In PDF document text
    • http://alfavit.tv/userfiles/file/witejazirovo.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f434154fb1---jotebo.pdfIn PDF document text
    • http://beiks.info/public/file/bovuwexojemekoba.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/02d0797d6efdd6ab0fd77d8ba4abfa32/10299150542.pdfIn PDF document text
    • http://dienlanhlongan.com/upload/files/9143971580.pdfIn PDF document text
    • http://nhactheducthammy.com/upload/files/97963721665.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/19819290475.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/45695960690.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/ritopetababulepotud.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/500f00912070b0df3173a43ec40b1d4a/devizafitelogisusajubovi.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/eaafbd7399bb094cd9ef86e591207ff5/kegawovibukinisonodazap.pdfIn PDF document text
    • https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608556627d649---94650935847.pdfIn PDF document text
    • http://doyen.cc/images/upload/File/jimezedodojibigixogunixat.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c789a60968---82092146753.pdfIn PDF document text
    • http://cuanhuaabshanquoc.vn/files/44968401624.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/b0a2affaa64ee6aecc2ff09191babd74/benorugebimebaref.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/816c119c0f8f8fe0daffc002bb86080d/9405362008.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609d8939132cb---55088067737.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085456ac6f3c---26827562211.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/db051426a437c31920f54cc37c483582/lenidugiwipedija.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=source+one+thermostat+manualPDF 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_off0000e63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE63D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4F 17388 bytes
SHA-256: fcb5e24ab9da49c7ae5c2b0332bc316912d588ace544dbe4b29c8ee01876cb56
font_02_sfnt_off00012bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC7 10576 bytes
SHA-256: 05eab958b79377afcc6840fe0c003f273dc101cbc0d5e93ea294bd872d280a35

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