Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0622564a2eff14…

MALICIOUS

PDF

78.4 KB Created: 2021-09-07 05:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 3cf2fd4c985b23c7e9a0c7492424f426 SHA-1: 520f170db68b48de197d8001a69fef3ad012d89b SHA-256: bf0622564a2eff14d29b0907bb571dc63d68fa109109a78006bb88456a04c872
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution intent. Although no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a malicious document likely used as a lure in a phishing campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4578

Heuristics 5

  • 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
  • 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://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b8b02b144---duselejorokeful.pdf In PDF document text
    • https://bakotech.at/uploads/ckeditor/files/vexidamipibes.pdfIn PDF document text
    • http://prunay-en-yvelines.fr/ckfinder/userfiles/files/63901337113.pdfIn PDF document text
    • http://jpsacademy.com/slbdavbatala/userfiles/file/73677725812.pdfIn PDF document text
    • http://edanieltour.com/FileData/ckfinder/files/20210603_DA5727F851EDA079.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e34d26a604---87693108504.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/efa81e22e3c0b08e6ea06e9b351bbc42/jodolaj.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613390b292a34---46452955860.pdfIn PDF document text
    • http://madveras.com/ckfinder/userfiles/files/letalulube.pdfIn PDF document text
    • https://tigapilar.com/upload/files/xenokebimokowemipo.pdfIn PDF document text
    • http://stuarteisbrucklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/51942504418.pdfIn PDF document text
    • http://wixoon.hu/upload/file/11192964260.pdfIn PDF document text
    • http://donkaew-furniture.com/ckfinder/userfiles/files/pamunopiviwepa.pdfIn PDF document text
    • http://abwgulfport.com/uploads/files/81574598383.pdfIn PDF document text
    • http://www.la-rocca.pl/app/webroot/files/files/muduxuvipowora.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160889eef74f89---dumuwemogemu.pdfIn PDF document text
    • https://pachetedeturism.ro/images/files/43526728754.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210508232925.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607416a32ea5a---teduvanope.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/8f4c788c340ec4d919f69829d0fc86e9/xiwididopejasix.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021070611501070.pdfIn PDF document text
    • http://feynburg-uhren.de/uploads/wununuzeme.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/43114564145.pdfIn PDF document text
    • http://agrion.org/upload/fichier/80162600341.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b77d741ca7e---84321715535.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=apc+physics+lab+manual+class+12+pdf+free+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE540 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD52 18564 bytes
SHA-256: d657e5c065fbe91e9950db6a8ac727abe994688f3f68d5209244a1b3e79d1a1a