Malicious PDF — malware analysis report

Static analysis result for SHA-256 e418303203c196bc…

MALICIOUS

PDF

75.1 KB Created: 2021-06-10 19:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7a07cc8f1c035c5b3ea7f5b8031ee3c SHA-1: 1f74c4036785220706f4198c692ca22cb994a3bd SHA-256: e418303203c196bc4c45d75896088b848f8b7bded5554505bb32eafa6a369ecc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links, many of which point to compromised WordPress sites, suggesting a link farm designed to distribute malware. The embedded URL `https://irlanc.ru/uplcv?utm_term=plants+vs+zombies+2+hack+free+download+for+pc` is particularly indicative of a lure for potentially unwanted software. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9744

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://irlanc.ru/uplcv?utm_term=plants+vs+zombies+2+hack+free+download+for+pc
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/1eb2326ca300fc6572fa18d2725ba9a0/dizexoxa.pdf
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fuvematoxuzaginima.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ae001c895d7---zogosalibodasa.pdf
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160913eb80c026---90563457189.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160850b8da877a---49493743282.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087bcd0af2fb---molivejuxewonaximoge.pdf
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/839f6f882fa263671bc68e24e76c44b0/fokasos.pdf
    • http://aimic.com/userfiles/file/64696588255.pdf
    • http://perfekttorun.pl/pliki/50229349817.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/bi5sm0rekncuvdal3mpnlnnad5/82018522877.pdf
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16085a7d793940---xidonovubatedidilonuzal.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b01c3c1b97b---40916245137.pdf
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/trc02u4l7sftecs3pmgu24u7dl/93670874311.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/pnvt6fhcu1sre3vf90uffaq2om/3983884281.pdf
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160822e0d2b72f---76446795592.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f092.bin
1c144d700c0a9ba02babd5203aab1a728580b05145aa803b1f2f6b4c52aeecdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF092 5936 bytes
font_01_sfnt_off000104ba.bin
e8b66edd858a042999bc1f630f7dbb34b35ee9774862667fa0b90e96133d8ad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104BA 11680 bytes

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