Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd045e79c99d423…

MALICIOUS

PDF

64.0 KB Created: 2021-10-14 04:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b88b4027b424c25a57b018d0d96c0aa0 SHA-1: 6a225927143130f00f137bdd82af64f6757dbd00 SHA-256: 6bd045e79c99d423598b7098ab8030dc4252e5c16efcbc6bea765bcb6db02cbc
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm PDF. It contains numerous embedded URLs pointing to external sites, including one with a 'utm_term' parameter suggesting a tracking or lure mechanism. The PDF structure and embedded links indicate an attempt to redirect the user to potentially malicious content, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7367

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=call+of+duty+black+ops+1+ps3+torrent PDF link annotation
    • https://sunnyrosesschool.com/userfiles/file/53893580958.pdfIn PDF document text
    • https://cebubigsellers.com/userfiles/file/96498431965.pdfIn PDF document text
    • https://petek.biz/resimler/files/vovawek.pdfIn PDF document text
    • http://fond.ru/userfiles/file/negagomifatod.pdfIn PDF document text
    • http://scandinavia-ex.com/images/blog/file/rakagisuwimivimubuki.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/98455830718.pdfIn PDF document text
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/24971114be67f0003defe249eae481c9/narimulisajumow.pdfIn PDF document text
    • http://nemeckystrakac.sk/editor_uploads/files/96604373622.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20211009102109.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/59f1888f93ce70dd8dc1f8caf42837e9/sanixidinizukazu.pdfIn PDF document text
    • http://bk-plus.at/userfiles/files/26380322744.pdfIn PDF document text
    • http://siamintertrade.com/file_media/file_image/file/72249058951.pdfIn PDF document text
    • http://bronnicy.inhome360.ru/admin/ckfinder/userfiles/files/vagebenajuvukomiwix.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/65895365312.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/wipumixumaki.pdfIn PDF document text
    • http://www.coverseg.com/uploads/ckfinder/files/fezibulejarawizo.pdfIn PDF document text
    • http://zkqzl.com/uploadfile/file///2021101316062518.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/98668309434.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/difuwozateli.pdfIn PDF document text
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/kinalawijezefulave.pdfIn PDF document text
    • http://onsijsselstein.nl/userfiles/files/28182730599.pdfIn PDF document text
    • https://rosycaffe.com/file/94768457320.pdfIn PDF document text
    • 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_off0000c959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC959 11220 bytes
SHA-256: adc3f634ffdcb4deeea6db9150012d2a429e9f71686d3bdd37056a501acc4550
font_01_sfnt_off0000e3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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