Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5468d42ac0398f7…

MALICIOUS

PDF

79.6 KB Created: 2021-09-04 06:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a2ed0d87c2634d773e7504e357f19f79 SHA-1: 1523fba2145252438e5c4342432ae15dbec19667 SHA-256: f5468d42ac0398f71cb0a51e1878a0ca34e140ef1624aae788be38b1a867b014
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to numerous websites, many hosted on compromised WordPress installations, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 https://infrive.ru/uplcv?utm_term=turbomachinery+techmax+pdf PDF link annotation
    • http://broadgatecapital.com/userfiles/file/66735827160.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/ft078gd7fsauir6564arapnieo/35043940141.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/4eb41bb4f951891355ba7add3751e388/92105359988.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/27797610446.pdfIn PDF document text
    • http://laboratoriologos.it/userfiles/files/badumu.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/1535279370563cb6c665d60813d91000/gutowufovipajefofadugavi.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/h86392qi3k100s5nm5mdrva0kh/26687448427.pdfIn PDF document text
    • http://gpmpoolandspa.com/ckfinder/userfiles/files/tetoxisegizowifuni.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa52c075b3e---jomezulibonejuwenazor.pdfIn PDF document text
    • https://camelcarpet.org/d/files/pegefijawuwekeri.pdfIn PDF document text
    • https://tenshinorchids.com/FCKeditor_upload/file/21630353450.pdfIn PDF document text
    • https://euforbiabulgaria.com/uploads/pages/files/juluzupaxum.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16104b6132cb3e---13835892994.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3ea83b451---zoverel.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/161081490caa5c---vemiduvemam.pdfIn PDF document text
    • https://bushregenerators.biz/userfiles/files/degimasukatijitimopurefiv.pdfIn PDF document text
    • http://hoachathoanggia.com/userfiles/file/dipopuroxiduvoz.pdfIn PDF document text
    • http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/73387575683.pdfIn PDF document text
    • http://konberdbio.com/upload/files/61134334554.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7b7a24d25---runil.pdfIn PDF document text
    • http://sshs61.com/clients/6/60/60e739d5a8cf4a6710e4f064fd99417d/File/feguwutetezunizudakuni.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_off0000d28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9C 17460 bytes
SHA-256: 25f8dfe9b7d813003c5b60d353544b7dde104d8de64484d132a187efc9a269ac
font_02_sfnt_off0001180c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1180C 11092 bytes
SHA-256: b3d19e943479829a08a31ae6a222041daba1bbbbaf190b519e2e732103cf1cab

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