Malicious PDF — malware analysis report

Static analysis result for SHA-256 d33cc741e20e58e3…

MALICIOUS

PDF

59.9 KB Created: 2021-05-11 13:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0685f58c5f346f973883884e065b6df8 SHA-1: c8e9b1599324c31d9262ff5abc007187915663b7 SHA-256: d33cc741e20e58e3667fa4a74f3ac0d6049439fd9ab14d6bf166287cca505a89
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to compromised websites and disposable hosting, suggesting a link farm used for phishing or malware distribution. The document body is heavily obfuscated and appears to be a lure, possibly related to 'blank space karaoke', directing users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8156

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.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608c483dbfe05---depipax.pdf
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/6aabcee9212ed787a10af30e13b26909/9452500756.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869e5595982---3115651472.pdf
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/6u1dsub9kutml79v9e5eosq8q6/7585069567.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6d83b9662---pedixix.pdf
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608549657501d---gavewekotudu.pdf
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861509ccddd---16872959964.pdf
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095f063977cb---4678094849.pdf
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/bm79vgclm5tcvihj8bjmh602s9/34502447660.pdf
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/b16a5938537b6bd945ea763daa223aa5/zulofusedoloxeb.pdf
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/on49akve77118ag9ma103e0tij/xereketu.pdf
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a13f27f05b---fepovikufilogifiwamepiw.pdf
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16077e9f58adca---rosoju.pdf
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16077c664e1a06---1425699044.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/js7bt74nmr36ae116m4hi2qub6/61443984700.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=blank+space+karaoke
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1cc.bin
308cbba7c793d8332cfd95df6b49a9648b615991a70ee03d516aed36d7c56f2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CC 4700 bytes

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