Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e03a3ec4c86c988…

MALICIOUS

PDF

94.8 KB Created: 2021-07-30 00:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: eb0106e9985c59b4430051668cebaf73 SHA-1: eb8a6b4774032d719d5a74fa671bd3be894e5c72 SHA-256: 9e03a3ec4c86c9885de262894a94480fa5404074e1efcae08d02bcee148f2e1f
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a link farm pointing to various PDF files hosted on potentially compromised or disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/61607943365.pdf In PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/zugozeximepixa.pdfIn PDF document text
    • https://dm288.com/slicice/file/vedovo.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/42210762809.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16098410a52e9a---jedozanumajifamobib.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202106281622496150.pdfIn PDF document text
    • http://travelshops.pl/userfiles/file/14483501656.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/0371a310cfb27497187a783bd7c6916b/94920872646.pdfIn PDF document text
    • http://szymonadamczyk.pl/uploads/fck/file/52416305333.pdfIn PDF document text
    • http://novastal.pl/userfiles/file/56477005238.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade0293b0d6---boramowuvujeruziw.pdfIn PDF document text
    • http://www.ags-sib.ru/ckfinder/userfiles/files/vewezolesiwu.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f93a6df81e---fexokixeporibabami.pdfIn PDF document text
    • http://alltechsro.cz/files/dopilagifipilizifo.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/dojumulozupokinume.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/325233845559af45f3510dba57df3151/48770349388.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/57bc393a350884efff1ac8c92e9ca9f8/joponavekodebegif.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858448861c8---moxomobagiridem.pdfIn PDF document text
    • http://somsit.com/ckfinder/userfiles/files/96758495222.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a08f41ecb31---jupamutufuxuwisib.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daed2e37a51---12978730324.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610321120755e---kuvevifelevipewojadaxilig.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebe54d199e---lusoneketasu.pdfIn PDF document text
    • https://travelsafeway.com/userfiles/file/35672774299.pdfIn PDF document text
    • https://virtualpulse.eu/UserFiles/file/fokanitel.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/6381177193.pdfIn PDF document text
    • http://baominhlabors.com/upload/files/dixarefezimofawixufi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=how+do+i+track+my+refund+from+turbotaxPDF 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_off000108cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CC 11048 bytes
SHA-256: 45ac34764f845923aff146b1e946e720e60b0fa5cd938ac0cf34dbf5d01f39d8
font_01_sfnt_off00012289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12289 18632 bytes
SHA-256: 159a8dc5bfcd2081595966f3767468dceaa3d7ba824180ae94b7a892f5ca5b59
font_02_sfnt_off000152be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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