Malicious PDF — malware analysis report

Static analysis result for SHA-256 703f861f8e557fad…

MALICIOUS

PDF

47.8 KB Created: 2021-09-06 15:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 12948bbafc3ce6661969fc3edf5c1c56 SHA-1: c65022e41a10decd5cf7fe5191e06826f606f395 SHA-256: 703f861f8e557fada3c0c6f6cc76b616c453699294aa8188634ad62fbf65c02c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or are part of link farms on disposable hosting. The primary purpose appears to be redirecting users to potentially malicious sites, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7840

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://happysmilecard.com/uploads/files/38250974014.pdf In PDF document text
    • http://mishelik.ru/userfiles/file/valiguzulazotasusepuzus.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/5d07880b27703a324267a7f42d560d59/80667747189.pdfIn PDF document text
    • http://klasykarozrywki.pl/public/images/fck/file/68680227723.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/31788881101.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/49c01a232660d092c532413cb136a6f8/tiwixitisufigumupenikaw.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e655e81e3e1---nakowuriwaleniruz.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/70512010544.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/0k5f8pfp0tnq25s1ufcv7bc3op/2746634108.pdfIn PDF document text
    • https://emmaushuis.org/pages/52982483385.pdfIn PDF document text
    • http://autoachtercamper.nl/userfiles/file/53930094249.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/89585699448.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/2784999cfba13e75d0505c8fac01dfa9/52910540721.pdfIn PDF document text
    • https://die-elke.de/cms/elke_page_files/file/gesozolupigekumizoz.pdfIn PDF document text
    • http://vipacademy.org/userfiles/file/xowopixuj.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/b4de96da0d7563c0182b6b4bdbd90a6c/tovubajelepaxerexewogo.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/wutanuluwirarakudin.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/90982930940.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/44509522327.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e040d98ce---fufunitivusujibiso.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082deed78413---sarugunoxoguwunadepiti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=manualidades+con+material+reciclado+por+el+dia+de+la+madrePDF link annotation

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