Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7f57918beaefe41…

MALICIOUS

PDF

63.9 KB Created: 2021-09-11 21:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: aadb4f87446ac7f856a254b2ae5399b2 SHA-1: d6095538ee7bcbc0e552e1f944d8796910d553e4 SHA-256: a7f57918beaefe41941b39dce2ccc9a9ae54f1d4254ede57ce3e3ad99d800e8b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a large number of external URIs, many of which point to disposable hosting and appear to be part of a link farm. This suggests the PDF is designed to redirect users to malicious websites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9109

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://pistant.ru/uplcv?utm_term=what+is+the+most+downloaded+game+on+play+store PDF link annotation
    • http://okzawidow.pl/img/upload/files/33929699808.pdfIn PDF document text
    • http://yetisirkaucuk.com/firma/files/67902126166.pdfIn PDF document text
    • http://propack-th.com/image/upload/File/weganaromakutupogutare.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/7194053360.pdfIn PDF document text
    • http://scandinavia-ex.com/images/blog/file/kurezajelenaxutof.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/kerawej.pdfIn PDF document text
    • http://hmconcretemixingplant.ru/d/files/68544761520.pdfIn PDF document text
    • https://vaynhanh365.net/contents/files/204420056.pdfIn PDF document text
    • https://diedacorporation.net/freesiafiles/file/nakofujeg.pdfIn PDF document text
    • http://chukgoobok.com/files/fckeditor/file/nilanolugivu.pdfIn PDF document text
    • http://elma1.ru/!upload/files/49082359443.pdfIn PDF document text
    • http://ud2-140.com/files/77053064544.pdfIn PDF document text
    • https://easresidence.ro/app/webroot/files/userfiles/files/69212843927.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/161382b695c4f5---loguzabepojawat.pdfIn PDF document text
    • http://anquocrealty.com/uploads/image/files/lejikera.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16131c85e77aff---68340704086.pdfIn PDF document text
    • http://satisfytech.com/ck/upload/files/67892404314.pdfIn PDF document text
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/sewimezamododawipujir.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/59394110913.pdfIn PDF document text
    • http://hitechdentalhouston.com/uploads/files/36006398816.pdfIn PDF document text
    • http://ozt.zielonetarasy-cieplice.pl/uploads/userfiles/files/40769123289.pdfIn PDF document text
    • http://world-green-hope.com/uploads/files/99347385270.pdfIn PDF document text
    • https://gfwofficial.com/ck_imgs/files/12330412884.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/11423512123.pdfIn PDF document text
    • http://araulmor.tel-cor.com/images/library/file/mexofexoxopurinenefo.pdfIn PDF document text
    • 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_off0000d661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD661 16920 bytes
SHA-256: 8008cf203578dc03e872e5e77f9d02f8bdd711c6e23eb5dcdcc33cdd5fd6f556

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