Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6876fc17220cb1…

MALICIOUS

PDF

65.1 KB Created: 2021-09-29 12:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 827fe798433b92562bb98bbb8662744e SHA-1: 1d95651cfe25ee58295ffe8043da40b47630b0be SHA-256: 9b6876fc17220cb15779354c333e0de7f62d0f3c4cc2c7f227dc31c620da59cb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are flagged as potentially malicious or part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5448

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bae723cd5d---jagugoxeviviwaruzaki.pdf In PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/9fa1b8541902c446a82afa9531ff9603/50462652262.pdfIn PDF document text
    • http://barexkft.hu/userfiles/file/14913686754.pdfIn PDF document text
    • https://lostfoundglobal.com/userfiles/file/73251772934.pdfIn PDF document text
    • http://civicwomen.com/ckfiles/files/99521501737.pdfIn PDF document text
    • http://htwy.com/upload/file/95232980293.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/65918212398.pdfIn PDF document text
    • http://saiprogetti.net/userfiles/files/20579770819.pdfIn PDF document text
    • http://dailycan.com/userfiles/files/vusef.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dapakifokativuxop.pdfIn PDF document text
    • https://goldengatetaichiqigong.com/userfiles/file/15089692873.pdfIn PDF document text
    • https://naveenent.com/administrator/imagetemp/file/dijufamigetoridova.pdfIn PDF document text
    • http://herium.net/FileData/ckfinder/files/20210906_A8E1BB56DC7568B8.pdfIn PDF document text
    • http://khiensa.com/UserFiles/File/28409451607.pdfIn PDF document text
    • https://www.mmgrowersg.com/ckfinder/userfiles/files/vagevitemul.pdfIn PDF document text
    • https://lomasdelaweb.com/userfiles/2008.09/file/liwodovipukivusivi.pdfIn PDF document text
    • http://logtech.cz/foto/Image/file/fatitukozisarategaguza.pdfIn PDF document text
    • http://pomodorolennep.de/gfx/userfiles/files/20544301465.pdfIn PDF document text
    • http://full814.com/upload/files/74189922650.pdfIn PDF document text
    • https://hohsingfiber.com/ufiles/files/41226203834.pdfIn PDF document text
    • http://bushurov.ru/images/files/bagaxogovofugumolirawobi.pdfIn PDF document text
    • https://xpress2.eu/ckfinder/userfiles/files/49831593121.pdfIn PDF document text
    • https://cmf8.ir/data/file/buwazedad.pdfIn PDF document text
    • http://www.offshoreyachts.net/web_upload/editor/files/jefujofimomi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=academic+vocabulary+in+use+pdfPDF 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_off0000b0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A3 11084 bytes
SHA-256: 2ec81c1da2ef60fe862f8deb74650d0b99409a07e34a03182f35dd78585c7abb
font_01_sfnt_off0000ca41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA41 16144 bytes
SHA-256: 4a1cc97a3de1bef5a14dd589bd528889dab26d0f2c8d581a29aad6498fdbaa21

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