Malicious PDF — malware analysis report

Static analysis result for SHA-256 b49001bb511180b6…

MALICIOUS

PDF

65.9 KB Created: 2021-06-23 12:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88a82d31f994e54f83f4fa7342c1a4e9 SHA-1: aa21051f2a0d570a555accaa613a841ab5dd0a37 SHA-256: b49001bb511180b608f68a299ef5026e1b9898fc7a5d7410f157cd3e57216bea
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm for phishing or malware distribution. The ClamAV detection and ML classifier strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8702

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://abogarestudio.com/userfiles/file/34963931230.pdf
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/44ea7de905b431c3bec019982c050ae4/sijozubedapefoxow.pdf
    • http://gayaarchi.com/userfiles/file/20210520115440.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/8e82b0h2l435jv5rlsig7otego/64029901915.pdf
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/4bc133ef49cc9fce23764aa19886c7d9/gosapezeragijof.pdf
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c335a332192---vegevimowasimiwugixevogun.pdf
    • http://erdivigado.hu/userkepek/file/38999480653.pdf
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/171d16547baac46bcdac80dedc8dc6b7/disubazapilalulexutabomek.pdf
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/9c5affbd9e73f8a966674a37c6740c41/kukibilubinowimasasedom.pdf
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16086da8d5baa7---fozikeximivuzera.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071c65c15049---pupul.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/bc57b9161f9aa8d677283610ed8f77fa/nuzegesopovegidamona.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ad9c2daa9---77177381152.pdf
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16087fbf90d188---simewawepewesituximob.pdf
    • http://sylvianapoles.com/clients/e/e6/e63d90d46a840f0b3195f531cec11f6e/File/jewitezuvogazigewatexolam.pdf
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/35033cobgi5heghcdohvnkmcq6/buwakiviwa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=ah+mio+cor+sheet+music+pdf
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/12b7ca262186c3b0f5c564d7a447bcff/36255019852.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcb9.bin
daf0d5791478d0038029a766cabf98b6c1bd0108c80c4c6670966802ab4e64cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB9 5144 bytes

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