Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0047b0c7bdb1e5…

MALICIOUS

PDF

64.0 KB Created: 2021-09-17 14:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 57f6add5c12dbbc502904052ca5ff89c SHA-1: bf868923594555f777238ae74403491c1e040fd4 SHA-256: 0f0047b0c7bdb1e5960972837c59f2a709a5b202c3a11a45cc475f72c5b92c5e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to potentially malicious domains, and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm on disposable hosting, suggesting a phishing or spamming operation. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9586

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 https://turasmobilya.com/img/editor/image/file/goriwetajazimabetatipa.pdf In PDF document text
    • https://dulsuc.cl/userfiles/file/71473987787.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/167790377061439792ac995.pdfIn PDF document text
    • http://karlsbach.de/userfiles/files/rafetojov.pdfIn PDF document text
    • http://domuran.pl/files/file/51925285596.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a731bb8fa---pepisakokenetadubeba.pdfIn PDF document text
    • http://curvesncontours.com/userfiles/file/gogesatokarikod.pdfIn PDF document text
    • http://idroter.org/userfiles/files/52929111742.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/55249569716.pdfIn PDF document text
    • http://merydian.pl/nowymerydian/userfiles/file/tumisiturejogijabo.pdfIn PDF document text
    • http://kolesnikov.pro/ckfinder/userfiles/files/96608287915.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/aeuuuae9riu985o3sa24015dj1/78283441005.pdfIn PDF document text
    • http://xn--80aab8aioy.xn--p1ai/userfiles/file/75861948708.pdfIn PDF document text
    • https://markmont.eu/editor_uploads/system/files/66764668436.pdfIn PDF document text
    • http://kleinschadenexpert.de/userfiles/file/nojeterugibujigeku.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/jolakifagu.pdfIn PDF document text
    • https://peterdegendt.be/file/45331965620.pdfIn PDF document text
    • http://kapfenberger-schuetzenverein.at/userfiles/file/jagavegex.pdfIn PDF document text
    • http://geluidsadviesnederland.nl/ckfinder/userfiles/files/bijileterigofewavijaxu.pdfIn PDF document text
    • http://logenamerica.com/userfiles/file/80788989613.pdfIn PDF document text
    • http://cgmorenanews.com.br/ckfinder/userfiles/files/5371575290.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=web+tv+app+for+androidPDF 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_off0000d7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DB 10476 bytes
SHA-256: fce795fa38facc6b56ccd18c6010d460742fca7b57d07b586e55f03737be6b54

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