Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d164118b1c5f2e7…

MALICIOUS

PDF

63.7 KB Created: 2021-05-06 17:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbac60eb08186bc51fed90ad4f186f57 SHA-1: df996f61d03a03793a55e94afebf3871b5d4c988 SHA-256: 8d164118b1c5f2e75bf1ed32fa12edc8532f174dd9cd3de7db109fe64d78267e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file contains a link farm pointing to numerous URLs hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8599

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://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ae99c2756---69876627625.pdf
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/3ckpn99nfgkujof6ltsgsjrje4/murepijobowigeg.pdf
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/9afd4bea11077d89bd1bdf6a7f5bbe08/dijovoponefetex.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c86e4ab52e---30858345937.pdf
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/89dfc3b9f32a980055e9ee3ef3cc3827/jiloramen.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/147e312e67cb065de8b716317d4943c4/8736949385.pdf
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/n0huekm8s0261h73r16i2ggpg6/26660444884.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/mk6la5flg17k30sooinc4utnj4/51632517948.pdf
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0421d2dbb---dimumitajegebewir.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/rg0v5capreme7jh9ht0ceekpgp/vufevajoduwezuzoju.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/363a02cc13c72dd74becc854959d9eaf/53341644228.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/5a859ae4da602016298d4cf4cbf0b70c/65063710338.pdf
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb92d1b390---desefumexamowarulibubi.pdf
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5d306531a---13248039497.pdf
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082bc817dc18---4885368721.pdf
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/6085db81a13ec303fe67e086f933dbdb/81999475015.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac4ae9af57---miraw.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/282ipkrifladal98fsla32kkmj/94567473816.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=age+of+empires+3+graphic+mod
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0a0.bin
1607265b7fa63916bc25fb82d8a98450381a8ace30b620fd3e4a2f6c83226969		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A0 5292 bytes

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