Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aafc55efc3b76e2…

MALICIOUS

PDF

76.2 KB Created: 2021-08-01 19:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 21d8cc77f5096c1dc2472d8b1e945996 SHA-1: 72d00401f6c39525ca96c31e65bdbbc7551e16f9 SHA-256: 2aafc55efc3b76e2b0bf8bb388a6c9b20abe47756391f686882273d424549109
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript, which is often used to exploit PDF vulnerabilities or redirect users to malicious sites. The presence of multiple links pointing to compromised WordPress upload directories suggests an attempt to host malicious files or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5248

Heuristics 6

  • 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.
  • 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 https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/b071e090cd3670404e86f9166ae535eb/lixemidoxijobibozorod.pdf In PDF document text
    • https://bloomland.com/sites/bloomland.com/files/porogatejadowabixakutobim.pdfIn PDF document text
    • https://registracijakoncar.com/webroot/js/ckfinder/userfiles/files/31180251861.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/netoladekeze.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160924250be806---54336539666.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/91363158f4e206a9e1a6a29e7deefbef/59806530228.pdfIn PDF document text
    • https://p99.tw/pro_pic/files/lixogunumesefudoxodibo.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/mewiwam.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/mesagofidibopibitufed.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/lisuj.pdfIn PDF document text
    • http://teenaramainc.org/clients/875997/File/rabanafakulasogulabumona.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160911e51730cb---30070086963.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089b6e6c7c5c---vunaditimet.pdfIn PDF document text
    • http://megalaserasia.com/upload///tofusurufakawadolot.pdfIn PDF document text
    • http://dochoiotovn.com/uploads/userfiles/file/79820419291.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/rr6c6l19bd93r4qcjj06m8bl56/59899009998.pdfIn PDF document text
    • http://draftingfloorplan.com/ckfinder/userfiles/files/lusawiboxagadirevuki.pdfIn PDF document text
    • http://ahchala.com/img/file/19558394790.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/444a7b1fac958956d6bf2666aa2ee42b/jaxupelevijawojalag.pdfIn PDF document text
    • http://mesahighclassof63.com/clients/79820/File/dekin.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/42390323850.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/cadbbbf29be7ad20e47ece68d4b221a5/kudovasubajebodedofi.pdfIn PDF document text
    • https://sunpower.lv/ckfinder/userfiles/files/95898334275.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160bc951078748---vowefapigubuxibizu.pdfIn PDF document text
    • http://fxmeat.com/upload/file/b60372a091d12d87826d469fc14c0181.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=tecno+12+18+vistas+de+piezas+2PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8F 18120 bytes
SHA-256: 9f42dac6331546160b73c67b6956e759423a6835452ed2056102f495731a629d
font_01_sfnt_off00010cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB4 10832 bytes
SHA-256: d006f45857a82fe18e0c70d0c67587c0fae4065469840a1ec20855e6a5623279