Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cbe43f37a40d7d…

MALICIOUS

PDF

80.0 KB Created: 2021-08-06 23:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 723b423cc3a94106fdeefd597587b7a1 SHA-1: cfaf212d9534ac48503c515895e2d6b546d370c1 SHA-256: 06cbe43f37a40d7d4921772ea05d455372037462c455fa19af5de4820c6febe2
124 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection further confirms its malicious nature as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4740

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://accessiblevehicleservices.com/userfiles/file/peliwebi.pdf In PDF document text
    • http://redemaisfarma.com/userfiles/file/70295442757.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4b56364b0---jidowexulokitate.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/d15c9cd65335ed40a0573c1cc7c53bb7/kodazelazepabezazi.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/5jveh8fve2853lr6elsbr8bsv3/sodoredivivu.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/44805532481.pdfIn PDF document text
    • https://apc-algercentre.dz/ckfinder/userfiles/files/38444903040.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160be788b2ee67---38110120775.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16077345781874---95451682851.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021073017451352.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/9720e3a31cb6fd4b9d7a12e50e321f1a.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/bumewan.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/237b78eee1290ec71b09cb4236f739b4/mobumi.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/resekadelevudonijafevamu.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/5e0ad306f2e71880ed1e1ceaa3d5c502/potebubibokuzaguwemiloxo.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/fef772f16b3fd52dc1f143ed2aac6a68/6376400248.pdfIn PDF document text
    • http://aps-mes.com/files/file/xabedokevofimebeninusagot.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/pivoxitelak.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/8515424548.pdfIn PDF document text
    • http://nkcophs50threunion.com/clients/0/01/014062e559e26c1cf0711bcec4e573ae/File/47221752794.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/28a33d1c68f013aecab7a8989febb553/sibuwa.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160aabea4f1cae---jezimuvabowu.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160caa2f28483a---tinedinaj.pdfIn PDF document text
    • https://rachelrom.com/rescontent/file/82072904507.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ed123a6cfef---48582539150.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=how+to+put+a+pit+boss+pellet+grill+togetherPDF 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_off0000e5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A9 18700 bytes
SHA-256: 7f998573b855d5e7bf2067a7fe62f4d2f3b5184c9cf5530f702ad12e0b36e809
font_01_sfnt_off00011631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11631 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1