Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd969df708f1dfb…

MALICIOUS

PDF

86.7 KB Created: 2021-07-14 01:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7ea60bcae186315b903e12e93646c7b2 SHA-1: 5ebc1501523d469c02de2afd0cdefba69d5c8a2d SHA-256: 8bd969df708f1dfba20f9a40e1681169d389adb365d09e8621d9e83123322a6c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories, indicating it functions as a link farm. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to redirect users to phishing sites or download further malware. No scripts were extracted, but the structure and heuristic firings are sufficient to infer a malicious link distribution pattern.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4914

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 https://huntic.ru/uplcv?utm_term=town+of+eatonville PDF link annotation
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b3934c05a4e---doresisibusan.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160be10ff90079---30237429354.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b9810a785---84061119794.pdfIn PDF document text
    • http://promocode.lu/userfiles/files/kaxanirizuwiw.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb65f09a1f6---dinoroponevufumitiritag.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/88385628170.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/3519508973.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078776543b6f---sitawekolajawikeniso.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/kad3ssmsdpfv9hqleshgpim2vo/futuwekekuvejasivujasa.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/vigimimoledewexu.pdfIn PDF document text
    • https://termoformat.md/img/files/nurotuwilovalobikuzujex.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/2a06798ed37e96107175953429ef8fab/lilekelepelaza.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607064dc0ce92---89038586909.pdfIn PDF document text
    • https://diedacorporation.net/freesiafiles/file/94717863303.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763855f2c0a---leruwemikekijon.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160865b1e4ce76---8476548493.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/notakupufubapimibubologas.pdfIn PDF document text
    • http://karat-dobremiasto.pl/userfiles/file/bufetutakisuda.pdfIn PDF document text
    • https://noriupapildu.lt/ckfinder/userfiles/files/20574883866.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9c60e137b---44196104976.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607668fe2bc18---51128532682.pdfIn PDF document text
    • http://uppercanadatwocylinderclub.com/clients/877835/File/4975750683.pdfIn PDF document text
    • https://callalilyvn.com/upload/files/25907973957.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160862c233d4fc---xiwowezunuworujana.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9e639a531---85456058009.pdfIn PDF document text
    • http://jdhs77.com/clients/58520/File/baxigeleduro.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E4 17176 bytes
SHA-256: 32ed3c39a994142b7f12a3d6a17246b2cf4a44c69825ddacd9966756a4738bf2