Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed11e06b2c74476…

MALICIOUS

PDF

77.6 KB Created: 2021-09-04 22:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a7b4f863ababf2e7c4bf45b32f2d79b0 SHA-1: febecd96c92244ae76e3775f6d163c220254a721 SHA-256: 2ed11e06b2c74476d9e838280bd9bd69310d5c4d866d7e6052299252c9664ec5
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF contains embedded JavaScript and a link farm pointing to compromised WordPress uploads and disposable hosting, indicating an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7301

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.sindafaz.com.br/admin/editor/ckfinder/userfiles/files/nogudu.pdf
    • https://bishopsalamatkhokhar.org/userfiles/file/wavozevakajotov.pdf
    • https://drakbera.com/ckeditor/ckfinder/userfiles/files/8506557017.pdf
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/rq80kmn1r8a5idimo1is8gf5k5/96822830523.pdf
    • http://www.web-globus.de/ckfinder/userfiles/files/pepekatawexomawimixewino.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16092869315c4c---zijowo.pdf
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/9615419484.pdf
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/o8qk9mk1rrqe49o4gbom5jpvc7/govulanalejimifabugawarut.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/b06c98f9761b17977120a899c1a0336d/gizijowumuvuluzevik.pdf
    • http://midel.me/userfiles/file/takolakosixum.pdf
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/48ca07b426788ca312f4534dbd798c89/wujurenenewe.pdf
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/47226894848.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce5911b520---sifevet.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca3020a8ea---majowedugibafufapa.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/f1e014a6df956a8643dd8f9ad12687f2/lafiwefipamajisulixob.pdf
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/h28hknhfip05tpbmo9bdk066e2/fikafaxatatekam.pdf
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c86d504eda---rajapefomavisigozeko.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb4cb534de---wivamusuvudekexujoton.pdf
    • http://hyunbulsa.org/~ewedd2/userfiles/file/64657634221.pdf
    • http://naphotelbangkok.com/userfiles/files/vefuxawexekazusokapufoxa.pdf
    • http://dulichtantai.com/files/uploaded/files/96302058327.pdf
    • https://towa-aaa.jp/userfiles/file/10764209487.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/acaa89ec9bbafa7c9b21b1ced4825d20/wijapon.pdf
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607962dd83d2b---47423134753.pdf
    • http://hutergroup.de/userfiles/file/5226593362.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=foxit+reader+pdf+printer+printer+socket+server+high+cpu
    • 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_off0000db64.bin
a18993a2271f5a9c19d1b1a6d91cad2ad7162a2d960ae20e0ab0a182e27c8f52
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB64 17644 bytes
font_01_sfnt_off00010962.bin
8825efc7ca685d34267ae096fb42efa63a70f08d7cce29d16a702396870063c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x10962 11188 bytes