Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68b7070f50edc87…

MALICIOUS

PDF

58.1 KB Created: 2021-10-06 07:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 04ae76265c50490882ff9410eab806d9 SHA-1: 97fe2071535830a54faa5f561812ff4b470bdfef SHA-256: c68b7070f50edc87a1f3488652d9c2b5f99d5419a98f531a26d318266bee02e5
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to other sites. One heuristic specifically flagged a URI pointing to a raw IP address, indicating a potential attempt to obscure the final destination. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5340

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://aspbae.org/userfiles/file/faxuvigulazegatemigeras.pdf In PDF document text
    • https://paymentor.nl/uploads/file/tiresiforawubupemutel.pdfIn PDF document text
    • https://dom4m.lv/userfiles/files/wokikarofuxifapimabonuxu.pdfIn PDF document text
    • http://architetturaurbanistica.it/userfiles/files/27742008617.pdfIn PDF document text
    • http://turnwealthy.com/ckfinder/userfiles/files/zotoniwosasefasuza.pdfIn PDF document text
    • https://codecs.ro/images/file/48404144703.pdfIn PDF document text
    • http://avandcie-automation.fr/ckfinder/userfiles/files/52953233271.pdfIn PDF document text
    • http://wintec-samu.hu/uploads/files/juvolupadosozedevide.pdfIn PDF document text
    • http://furnitura-syndicat.ru/ckeditor/ckfinder/core/connector/php/uploads/files/bukutomenumufejimobuzi.pdfIn PDF document text
    • http://flywings.sk/UserFiles/file/vesideveranenademuwebo.pdfIn PDF document text
    • http://popnmusic.fr/userfiles/file/18800196364.pdfIn PDF document text
    • https://mancomunidadvaldizarbe.com/userfiles/files/26948387532.pdfIn PDF document text
    • http://www.luna1956.com/images/library/File/fetomezufagur.pdfIn PDF document text
    • https://everywheregenes.com/uploadfile/qu26_qu106_com/files/bomazoguxeg.pdfIn PDF document text
    • https://mobile-translator.eu/app/webroot/media/files/vuwerogurarafuxipegudi.pdfIn PDF document text
    • https://santa.sg/images/users/00000000/files/tedobujitetasatalononu.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/52c892e762f17b160345260acbc7a662/gigugade.pdfIn PDF document text
    • http://progetec.org/userfiles/files/87978223978.pdfIn PDF document text
    • https://voxel-avocats.fr/uploads/file/In PDF document text
    • http://blgjad.com/upload/files/56093205490.pdfIn PDF document text
    • https://lazerom.pro/media/file/59616900580.pdfIn PDF document text
    • http://copy-office.it/userfiles/file/46238730074.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/nogotemozol.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/60470100953.pdfPDF link annotation
    • https://coluer.ir/documents/file/dolikatagujalipofusoj.pdfIn PDF document text
    • https://die-elke.de/cms/elke_page_files/file/jinarelisokepipeguwo.pdfIn PDF document text
    • https://greenbins.ca/ckfinder/userfiles/files/nurug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=dr+christopher+wellsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A1 10292 bytes
SHA-256: f33d204562f668212eaf39c8c85b9bc0d08d75cb31739f4fdf0b22ab69abc87c

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