Malicious PDF — malware analysis report

Static analysis result for SHA-256 658d306f2a44cb13…

MALICIOUS

PDF

80.4 KB Created: 2021-08-06 21:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: a7c12e1f7b0570f96fc4b0a4369fb744 SHA-1: 38d67004e39ad5b6fe3fc474fd4c5dd5685454d9 SHA-256: 658d306f2a44cb138b436f95d26441c22a8f1b29292e1986e0089636674fb85f
124 Risk Score

Malware Insights

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

The PDF file contains a large number of links, many of which point to compromised WordPress upload directories. This behavior is indicative of a link farm designed to redirect users to malicious sites, potentially for phishing or malware downloads. ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4860

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
  • 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://timebymtm.com/upload/files/90025508856.pdf In PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/g3bujfc9k8d95b2uddibqj53f7/sifotarulolonakovajili.pdfIn PDF document text
    • http://haohanlegend.com/Uploadfiles/files/zokajimobeno.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/57ad2ced5cee55091dc272e5474e4580/zaxemuletup.pdfIn PDF document text
    • http://atomiccm.com/userfiles/files/nimedovor.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/hlgai59sgqc1atcm0rp8k3s7d1/fowodotataxefobuvukuwazal.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/3aprr21kottof812n3mvjom8al/xirifotugipa.pdfIn PDF document text
    • http://casier-a-bouteilles.com/file/26211638608.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e25c132cf---guzekanoseforosini.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/4q4kdvglis2ktoas7mn6vj2akp/8186756239.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/07d9af22e48fd004fc27843d64cf5252/bovowokomuxawuz.pdfIn PDF document text
    • http://nwatchonline.org/userfiles/file/xexebaxobotureterafag.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/675vfhg0045mlvp5geos299q95/razopadu.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb87162b69---belomevomijesozetone.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/13b3652103b976d12570d101abce2b04/62064897640.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/73e2a6046008a7b9c8db395eb012f68d/dotelitewam.pdfIn PDF document text
    • http://piri-piri.pl/ckfinder/userfiles/files/dalax.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/xelemozezo.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/57579316319.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/s3f7qpuu8rkjt258nlatftqbb0/tuwawofozo.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3738ebd1b---witunemisodotobekibifedep.pdfIn PDF document text
    • http://bamor.org/userfiles/file/90836350907.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/fadibadibara.pdfIn PDF document text
    • http://omni-links.com/famekidurezaxufopijuzunog.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/8050045dea187f13eb94dfdaca42accc/nijosikoxizivabas.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=descargar+dragon+ball+z+latino+mega+mp4PDF 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_off0000f4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE7 18180 bytes
SHA-256: acc45685b677577b91b3d5bef4c72323b8fb2efc05e6da0c62cc90498f276ef1