Malicious PDF — malware analysis report

Static analysis result for SHA-256 09aa72e93ea0a87b…

MALICIOUS

PDF

59.7 KB Created: 2021-05-20 06:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be3e22523c1c17bff9aba6f0e42341cd SHA-1: af1d19d148ff7fa0b0436b37519cd43a192c325d SHA-256: 09aa72e93ea0a87b0fdff32017192eef8ba9d251c7a49161c2d5bfcd023626f4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs pointing to compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of these links indicates an attempt to redirect the user to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9746

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 https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721db2695d0---30402730541.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607976bd4187c---70848044933.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/729bd89642346c15983ad757eb3b4fcc/lezejivopigabuba.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160753277624f5---zabaxe.pdf
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/6htelb9nk4vf6f6q2l7vfgcspr/tijura.pdf
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/349098a37968ff18d573076248dd3c44/60367226847.pdf
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/c1c4690b6b9e8fa364082ccb585b9a64/wozaki.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ced3361d0e---63656620954.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/av6d53541mn41i07svl3lo2dq1/xivazuluzudegisipojiwabub.pdf
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/5c79402f855149ff7e44d8c8a849e1a6/gofipujunixepoperuwel.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/dmeu2kdan4pq7900msp2gjkh80/97909482626.pdf
    • http://asijskepotraviny.cz/files/file/6464138508.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607908a8a9ccf---sezejudexerisafijola.pdf
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/pcq4pckpo11g6o3duh0opig3ul/vurotu.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/2la2i2atjt9569cdbeqd46lpe1/rovupepilediwuwog.pdf
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608a001e77bc9---75539986245.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/aab2ce19fe60b31540f15e66359af7f6/28704802160.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=les+principes+comptables+du+syscohada+r%25C3%25A9vis%25C3%25A9+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da17.bin
b365f34fe2e2944e02540fa9a7183b1a94c9ee63b36ad697418c741cd99f2201		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA17 5780 bytes

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