Malicious PDF — malware analysis report

Static analysis result for SHA-256 442f969564467be7…

MALICIOUS

PDF

80.4 KB Created: 2021-06-10 20:54:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de101c63d770104de3437417e6251512 SHA-1: f87de280a21f0892b06e7ba581dfb4251c3c163b SHA-256: 442f969564467be78351fd3b9b3300452f5026f58a9e186ddc24b841bdf0da44
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The document body, though heavily obfuscated, contains text related to a 'battle simulator' and appears to be a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6943

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://chcial.ru/uplcv?utm_term=ultimate+epic+battle+simulator+play+free
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/7funavo1k3479k4v7f3qhbq1v0/43149671623.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc956844f8---winuzu.pdf
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/70ee56b4ab7b443aa1bf0fd0a73329e9/55660140121.pdf
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/5h1s9kmdihnutu28d34n5vafd4/80237393530.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/4e487dfe000419f219338dc2c587cba8/59273188031.pdf
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160832e6cae811---79688634299.pdf
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/04aj4sas4nsgc4amhqalf7gd1h/75953210664.pdf
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/b1bbdbc5060fd70ca53c3592ed12fad3/36169036099.pdf
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090fe69678a4---45162498093.pdf
    • https://thefertilizerequipment.com/d/files/5268305506.pdf
    • http://nicenpos.com/userData/board/file/48467103696.pdf
    • http://sllight.ru/design/img/upload/file/3826822964.pdf
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/c282f7a3d8eec7cdb8bd1e101754c708/38575207565.pdf
    • https://nevisnews.com/userfiles/55424980752.pdf
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a77d6dd8747---71981811381.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2356c543c---54542700848.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/ea23f5b628501c7a9ad2fc87c474048e/91681408021.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/7bc1688e6830a0d0426fdbaa57b1841d/raledoxosogawemufere.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00012c2c.bin
f2998b58c8f1e447c43a92f1ed8569ef95c70e87a1d0ba85fb3237b63ddb7c3d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12C2C 9468 bytes
font_00_sfnt_off0000f3db.bin
603473c80d297fc5db001b1a66e220ce6f2f749b6a1233a0cb54cdabf033dd66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DB 5396 bytes
font_01_sfnt_off0001061e.bin
0b8bb726ecb23dcd74a8c47f03b696b1ce9e7ecf35295f6724ae6b32476634f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1061E 11088 bytes

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