Malicious PDF — malware analysis report

Static analysis result for SHA-256 64556d49c4dccf8f…

MALICIOUS

PDF

63.3 KB Created: 2021-09-08 10:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 304bbcbfc67faebebcf759a1cfbd2ea6 SHA-1: 1ca837ab980ef0b03fe6d73a8d2c425e5c1c07ef SHA-256: 64556d49c4dccf8f7e241a5d82ed193bc280f44aea23c47850625211ebf33263
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and ML classifiers. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to deceive or infect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7986

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://crewmak.ru/uplcv?utm_term=philips+avance+pasta+maker+manual PDF link annotation
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/hobob40bh36mjkh4bt9fhiltlb/kukegamafiwujezu.pdfIn PDF document text
    • http://propellerclubsandiego.org/uploads/files/gexoteguxu.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/165eb84d76b1117586e4d8211fa52679/92298035762.pdfIn PDF document text
    • http://charivne.info/images/file/jiditotidezive.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/nemigakuwizasugizowepip.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/ea396972cca37516318ecd9bf92455d1/3828942445.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/bb9ceb3172b75117fc6871a81064b888/10074139810.pdfIn PDF document text
    • http://myflora888.com/ck_files/files/5087962559.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/d5095284fe243dc5437772ca81b6bfb6/zuditufufixalul.pdfIn PDF document text
    • https://razredna-nastava.net/files/buxeketoxifelu.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/n7f3f5mkr0vh6u7bmtrt03c78r/18000943348.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/bovubafetepeneziluvejedo.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/rixakazezujeb.pdfIn PDF document text
    • http://spostojow.pl/userfiles/file/90006997209.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16075c7f0d5cf7---wevuvidewome.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606d59aed7507---dumotijesetepegizax.pdfIn PDF document text
    • https://et-auditing.com/userfiles/files/49480516259.pdfIn PDF document text
    • http://rinsacars.com/files/others/80393207916.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/vt1n2pvmoiab5ddmjr9ti639qd/migojaja.pdfIn PDF document text
    • http://zeminyerkaplama.com/upload/ckfinder/files/46637604653.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/ad8a55db622ebf99edbb0149129f21af/dimesowexetemukumikoxapel.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/naludubibadowagizoni.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/a962a7a94739e3199fcd11da27c30c53/duwefe.pdfIn PDF document text
    • http://sunrui-ti.com/d/files/67078880599.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1