Malicious PDF — malware analysis report

Static analysis result for SHA-256 700125d279d01614…

MALICIOUS

PDF

71.6 KB Created: 2021-09-05 15:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 751702acc093ce6d605451945ae33ccb SHA-1: 3e31c747e8fd6bc99b5b54db1c27fa98e2ab05f1 SHA-256: 700125d279d0161481153e21b5c7535a5e675cbdabc5a1573a9b7a05c1e41098
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress installations or disposable hosting, indicating a link farm designed to redirect users to malicious sites. ClamAV detected this file as a phishing trojan, further supporting its malicious intent. The file's structure and content suggest it is part of a phishing campaign or a distribution mechanism for further malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4270

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://garglob.ru/uplcv?utm_term=root+words+worksheet PDF link annotation
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/fdf7a83115a794125387cae4c6a63817/13026819428.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/84bb5a5c2341462e27cd335d851ed44f/xenomadab.pdfIn PDF document text
    • http://gbfrjournal.org/pds/userfiles/files/19453417711.pdfIn PDF document text
    • http://accomplishtheimpossible.com/userfiles_ati/file/8679133948.pdfIn PDF document text
    • https://beytarimcilik.com/admin/editor_resim/file/54964996907.pdfIn PDF document text
    • https://www.domosystem.gr/ckfinder/userfiles/files/zisojevutazudoxoj.pdfIn PDF document text
    • http://artdealer.vn/upload/fckimagesfile/41f962a4a01d360400f9cda812e7f7a8.pdfIn PDF document text
    • https://mehreganimaging.ir/images/upload/files/53066087013.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/wawasojikiwosel.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/11765698468.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/6640243152.pdfIn PDF document text
    • http://arslanemlak.com/E/file/bolimisivamomo.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e1843d8f716---89947872717.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/71fa7b8ec7e1767a7c0fa69467673ddb/39354255506.pdfIn PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/60087733354.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/3732064917.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c65601638ac---wesaparodejaxevadada.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/86819492774.pdfIn PDF document text
    • https://www.playitdirect.ca/ckfinder/uploadfiles/files/71846082940.pdfIn PDF document text
    • https://shiokerbau1.com/contents//files/xelabositinovo.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/bemonomezalufarasorabij.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b79315743b---rutonilibububolijetapeb.pdfIn PDF document text
    • https://slaterlighting.com/wp-content/plugins/super-forms/uploads/php/files/93ff49f1abfe46fe8c11787a2f32076d/33062869694.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/23483484183.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16084062c8377e---dolebemuzakuvixixodozagom.pdfIn PDF document text
    • 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_off0000d387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD387 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9E 10164 bytes
SHA-256: 89c390c295214d7153f62ca15d9c8276f9de2b79a2cb3ecdecd9077912bc0188