Malicious PDF — malware analysis report

Static analysis result for SHA-256 229eb29e1e01f348…

MALICIOUS

PDF

82.7 KB Created: 2021-08-21 13:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: f1794e4d3ec34bd0f2276a3be3ae4aa5 SHA-1: a99d4c6c8f6d5e01d1ccbdccbd5330310fad796f SHA-256: 229eb29e1e01f3484e44c7b41b41aaefd98731280bb773a6d16dcef1e8157a85
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of a phishing or malware distribution lure. It contains numerous links pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The 'SE_CALLBACK_LURE' heuristic indicates a potential callback phishing or tech-support scam pattern, further reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • 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.
  • 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://postelezmasivu-zlin.cz/ckfinder/userfiles/files/vuwitudebavupit.pdf In PDF document text
    • https://deshpanday.com/ckfinder/userfiles/files/xisove.pdfIn PDF document text
    • https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/0b0e11bccabff01a403c9d8ae05bf0f7/fivosajadofefopewenu.pdfIn PDF document text
    • https://dentalrud.com/userfiles/file/95785039044.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/608dedb6405e26f5e7b37373869d1514/10634734975.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/91c5e3df844f61cb816610fb376fd1e9/mufobulotopokanugevoxatok.pdfIn PDF document text
    • http://shhs69reunions.com/clients/e/e9/e92da0bc0099326815942f81a5c18dfc/File/kosuvekenawumoraliduk.pdfIn PDF document text
    • http://purofirstli.net/userfiles/file/diwawatujozidive.pdfIn PDF document text
    • http://heyibnb.com/CKEdit/upload/files/46571292602.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/98777840277.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751b12cda2d---16630492389.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/s1t1vqkult5gk9rmhaj8dohu54/zaraguwatez.pdfIn PDF document text
    • https://fetogram.ir/images/upload/files/8052186595.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/126a049ed5bf87e4295a71f593e8f829/xudanasov.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160878b7ecb248---datikixisasinevarivaje.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/74740396498.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607803495e563---wuwenimanotiruwu.pdfIn PDF document text
    • https://rhuyscampingcar.fr/images/files/ragamog.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/88391393622.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/dotilikesu.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16091e166badf6---gijomodufirekimamafol.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/c0cf859c677156bc1b307c478e5253a6/18142217732.pdfIn PDF document text
    • https://taipeitccia.org/CKEdit/upload/files/50286242679.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/49fe830f9f26e5f5577535417d6db84c/49099584379.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=libro+de+formacion+civica+y+etica+3+de+secundaria+pdf+santillanaPDF 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_off0000d9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BE 11332 bytes
SHA-256: 244666918fc3edeb72d366ee59a6c7dbce387f1c9a9e4cfb33abb97a700ebff8
font_02_sfnt_off00010c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3F 18176 bytes
SHA-256: 07aef5804eb0ede898cddd851a3ca80efb32e21f215f152cf45eb2c305a9ce25

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