Malicious PDF — malware analysis report

Static analysis result for SHA-256 5181294e75b45907…

MALICIOUS

PDF

87.4 KB Created: 2021-08-02 04:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: fc3fe9b49df4cf47dd4de0e150e9a3ad SHA-1: 0400107c2636612f5589caf2aaee1689fa3c06c9 SHA-256: 5181294e75b459074c59865a6e495220fa04b5396cfcefc6420dec9b17db9936
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing or malware distribution lure, indicated by numerous embedded links pointing to potentially compromised websites and disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of multiple external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic point towards a campaign designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/uplcv?utm_term=best+map+mods+for+american+truck+simulator PDF link annotation
    • https://atrax.hr/files/70448956377.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/jidugukik.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/98hs7cmh8ra1tnugtsurotmc02/77956216790.pdfIn PDF document text
    • http://raisemoneyonline.org/clients/6/69/691275cf9a36cab982b2498ebdc715be/File/vowisu.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/3955154957.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e01364b0c---84109895733.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/5vdevfbkeeqk91h35rufleopfg/13542877921.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/20144031137.pdfIn PDF document text
    • http://vzwsportenmuziek.com/content_docs/buxusotegedejov.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16092ebd287cae---nexafikadatelu.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607270806ad3b---vosikunukukurojija.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/jenigagufilurikanum.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b693886d402---98833296289.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/b3169a400233ad71393a211a94ed378a/mitikejinowozuzumoxuw.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/wujetiroka.pdfIn PDF document text
    • http://desagresbrts.com/clients/34568/File/26061754877.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d9786dc2---nogukolemevenoderos.pdfIn PDF document text
    • http://petersonhigh.com/clients/33446/File/25684091287.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/e1rmffoigjguh2ql9939kplb28/28054312794.pdfIn PDF document text
    • http://ud2-140.com/files/dotogixiluluxugaposemaf.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/f47dbd7cda59369757a1b5bc4cc5a73b/17316307429.pdfIn PDF document text
    • http://short-story.ru/upload/file/7592649963.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/a58617a9e88e53a2a95a322f7954c54c/xalorijipudeposu.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/qr8feftmqskotsvjb3rrn4n4if/tujokuwugonepikonoxesi.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/36731582373.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160741f9b36a88---98653223841.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_off0000efc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000107d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D8 17388 bytes
SHA-256: 3d0ce0d0d0b9357007e42eb368315c65979f71ee21c129f5e94d9caa915fd3b6
font_02_sfnt_off00013572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13572 11024 bytes
SHA-256: f976d60e4ada8fce4b6cb27a29790e7c798d7e0683ef5f924a990d37b2c5f5a7

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