Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0e30be4eccba63…

MALICIOUS

PDF

76.2 KB Created: 2021-08-28 22:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 318338a02117da91f5094a9a02b3ccdd SHA-1: 603c929f7c66fcb74b71faa61c076fbe110bdd56 SHA-256: de0e30be4eccba63a1645ec8aa019b8c5a0aef36f47118fe01ffb72a3ec5f048
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating it is likely a phishing or malware distribution lure. The document functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised WordPress installations. While no scripts were explicitly extracted, the nature of the links suggests a potential for directing users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5474

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://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/6e4cc4ed417ea392d062a1e0311a0ab3/79390979865.pdf
    • https://okna-kurska.ru/page_edit/_samples/userfiles/files/zulub.pdf
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c4f3ea984---zuzaxodatufiburonugavem.pdf
    • https://cmoretv.com/userfiles/6305663972.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609d8e40d338b---godepedojobabamerotodepij.pdf
    • https://barcelonamedicalcenter.com/files/galeria/files/suvutavinuzurines.pdf
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096880cef05c---ruwofelifavij.pdf
    • https://cmoretv.com/userfiles/21447530576.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3bm4njsj3cu9956ffl05ehrm21/61218424884.pdf
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608efa3bb04a2---nutuxawowomupuxodivik.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/8bf2adba88d8d014396f1adf7e6aaf10/xibebixanuginusugez.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16070810145bc0---gagodubirotalegilose.pdf
    • http://ndt-ultratech.com/files/85669663075.pdf
    • http://kingcraftviet.com/uploads/ckfinder/files/sogaxuzilelupidabe.pdf
    • http://chistogood.ru/admin/ckfinder/userfiles/files/jagenewibozo.pdf
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/3rod2qd07ppu5d2udnc0c5ds9b/17491382258.pdf
    • http://thecrayfamily.com/clients/36408/File/25028680950.pdf
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16127055361a9e---69560297483.pdf
    • http://asustainable.com/global/file/wewakujimofe.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/7eccaa787128d4ab58bc82ca8c110c05/pimuvuzugasakelotil.pdf
    • http://wefocusdesign.com/upload/files/68508137933.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2d165af4a---wepekoz.pdf
    • http://elazentrale.de/images/uploaded/file/xujamesitexawiwuroxudi.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=tancet+mba+previous+year+question+papers+with+answers+pdf+download
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000defd.bin
ace1db1f79b289da2fdc27bec4cb38fc6bebf2d57c55afc237039da8f967ef6a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFD 18804 bytes
font_01_sfnt_off00010fe0.bin
436fea60537a02f74b4a6a797459323d3208ed86ef73f50ec2ee936276f2e13a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE0 11500 bytes