Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0f2e66cdf388cd…

MALICIOUS

PDF

80.5 KB Created: 2021-09-18 00:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9063354c51593891c9dcbdd8d67362dd SHA-1: 0ed3cb668b60e96ce2bb853feb5d6536b9469ce2 SHA-256: 9e0f2e66cdf388cdb54926d10614566ea37ac5f7a05e1128089a758541f4c262
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains embedded JavaScript and a link farm pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content or download further malware. The presence of a callback lure heuristic indicates a potential for social engineering tactics, such as fake tech support or refund scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=fliz+app+download PDF link annotation
    • http://kbautotech.com/board/datafiles/imagefile/nafitizixomifot.pdfIn PDF document text
    • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/5038152602.pdfIn PDF document text
    • http://fanta-life.com/userfiles/file/37674608378.pdfIn PDF document text
    • http://rainternacional.com/userfiles/file/wewizulapowivozamuxojewo.pdfIn PDF document text
    • https://lrdreamteam.com/files/files/file/InfoProduct/file/13019440920.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613143dc1ff7c---40219811031.pdfIn PDF document text
    • https://imotrading.com/images/userfiles/mojewi.pdfIn PDF document text
    • https://visualarchive.bg/files/xonak.pdfIn PDF document text
    • http://eakqshop.com/ckfinder/images_store/files/sexepovobukiziwu.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/47842224367.pdfIn PDF document text
    • https://guruvinodji.com/Userfiles/file/33212261614.pdfIn PDF document text
    • http://thriftstorewebsites.net/flash/thriftstorewebsites.net/file/56750572747.pdfIn PDF document text
    • http://stigstudiotecnico.it/userfiles/files/30372715191.pdfIn PDF document text
    • http://sushistoryus.com/uploads/files/90582174572.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf995a0199---minulaw.pdfIn PDF document text
    • http://powerfalcon.net/uppic/files/1538368369.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/lesameseriwebi.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/daxuvurujisak.pdfIn PDF document text
    • http://chetaomaynganhnhua.com/uploads/files/pabibed.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140dda40e408---80282220338.pdfIn PDF document text
    • https://clubberia.com/js/ckfinder/userfiles/files/98429803717.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_off0000d85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF074 10012 bytes
SHA-256: 5666afbcc85edb63054ec5663b1dd1c59e7c80cdfa1a8896387f189307e57483
font_02_sfnt_off000106bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BC 18052 bytes
SHA-256: d20a1a6537b7dfa49dce0dfc7ad43906d25db7d155b9d055d686f8ba999e8c20

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