Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccb1d20a6a789f6…

MALICIOUS

PDF

64.0 KB Created: 2021-08-15 18:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: dc18a14eb20f9a5b7703f4e27ca6400b SHA-1: 7ca4ec6980e65326b6ad78d631d37b6b610561a9 SHA-256: bccb1d20a6a789f68ff450a855755c021eebee300cf31f85cad7fa9bbc6ee865
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs that point to compromised WordPress sites and other domains, suggesting a link farm designed to redirect users to malicious content. The presence of multiple distinct hosts and the use of UTM parameters indicate an effort to distribute traffic and potentially track user engagement with the phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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://queure.ru/uplcv?utm_term=do+you+need+a+license+to+do+eyelash+extensions+in+ohio PDF link annotation
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2e379feee---pereda.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/pemufojazebodirusexodag.pdfIn PDF document text
    • http://bmcnx.com/userfiles/file/55906756463.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160779bd666112---53548542158.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16199096212677.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b07bab3d27f---25900623091.pdfIn PDF document text
    • http://asude.istanbul/ck_images/files/bunajonejagovupa.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/el575jc3d6370iidh3s2ak5l9s/rujotelisewumo.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/959fbc1a63322288b2b0bae304741df6/3088004507.pdfIn PDF document text
    • https://mercerapparelss.com/userfiles/files/4126331720.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c96ef77c0d---wawisujenumirigosu.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/75482513468.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16090a4bd7a76e---kajolepezebuzun.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/rjhje482s6u6pv4mia8jhptbng/vanawar.pdfIn PDF document text
    • http://muszempilla.com/files/file/wazugomesun.pdfIn PDF document text
    • https://sssmri.com/ckfinder/userfiles/files/vadajanivat.pdfIn PDF document text
    • http://apismorava.eu/docs/37154009470.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0198cebad8---bazobukewuzuvesixikazobof.pdfIn PDF document text
    • http://toyotarenta.net/FileData/ckfinder/files/20210802_C4043540272EECBE.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/xeputivemoporetetar.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1609dede31707c---rotewad.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743662c3903---61220036117.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_off0000e5b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B8 10684 bytes
SHA-256: f86864ea7d72569336e8ba2ba3a895193aa3d45a1ac4ce693d2ad933e8b1c686

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