Malicious PDF — malware analysis report

Static analysis result for SHA-256 52408c8ad7c8534e…

MALICIOUS

PDF

78.1 KB Created: 2021-09-19 05:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: c33148e111fa0e7be86fdf350bfafa88 SHA-1: 3de7e76fe97187ef69781dfe02f9b7087ed50a2d SHA-256: 52408c8ad7c8534e3b37661e1387ece5283189dda7f8807ec42fcf623e559233
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous embedded URLs pointing to potentially malicious domains. The ML classifier also flagged it as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5472

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://asesoriagade.com/app/webroot/files/files/vikeguruxu.pdf In PDF document text
    • http://flyingkirin.com/uploadfiles/file/111450337824.pdfIn PDF document text
    • http://kitpaisal.com/mypicture/file/raroba.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/xuxil.pdfIn PDF document text
    • http://kunas.lt/app/webroot/uploads/files/18309966240.pdfIn PDF document text
    • http://aprt1day.ru/file/galilefebalowofaselupa.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/sumisakeperejirosaregag.pdfIn PDF document text
    • http://kht.civilkozpont.hu/uploads/file/24581486733.pdfIn PDF document text
    • https://atlantidegattico.it/file/refedoziseloxi.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/35106860033.pdfIn PDF document text
    • http://kammed.com/userfiles/file/wamitufasoxon.pdfIn PDF document text
    • http://africanhairbraidingsalon.com/userfiles/file/55785498408.pdfIn PDF document text
    • http://ohana1bbq.com/uploads/files/mesari.pdfIn PDF document text
    • http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/55589618542.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/84166e800cb88882edff8673fd653b45/vizulemoxabawobexe.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/jawimumurabe.pdfIn PDF document text
    • http://khonggianxua.samdigroup.vn/app/webroot/upload/files/dagiwakupo.pdfIn PDF document text
    • http://tafgambiatours.com/userfiles/file/tiwubafoz.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/17380150577.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/5592588828.pdfIn PDF document text
    • http://yogasol.cz/ckfinder/userfiles/files/kanikudimonugebawo.pdfIn PDF document text
    • https://dacola.com/upload/files/dagetotuniwokibalavosim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=the+l+word+indexPDF 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_off0000f5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A2 10068 bytes
SHA-256: fddc5e3e0eecc0d129e15094d1daad495393af5b8e9d24d37d8ce6398e16c42d
font_01_sfnt_off00010bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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