Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f13042003a626cd…

MALICIOUS

PDF

70.6 KB Created: 2021-09-10 19:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a57769ee548a65170253dde3a7685f9a SHA-1: 92d62245bfbf895392497c8be97aa8b7dad03584 SHA-256: 2f13042003a626cd08e2878bf4b0e14df80a899d84d89f48a1d1349300341e3d
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and exhibits characteristics of a phishing or malware distribution campaign. It contains embedded JavaScript, which is often used to redirect users to malicious sites or exploit vulnerabilities. The PDF also acts as a link farm, directing users to numerous external URLs, many of which are hosted on potentially disposable domains, increasing the likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2995

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
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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.focitabor.hu/userfiles/file/192358653.pdf In PDF document text
    • http://autosoftware.company/autoresponders_images/files/98706282.pdfIn PDF document text
    • https://balajihighfields.in/userfiles/file/54043372501.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130232428f88---tovudajoxakov.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/zuvebegunofomepeji.pdfIn PDF document text
    • https://www.opsclown.it/ckfinder/userfiles/files/51640780495.pdfIn PDF document text
    • http://condominiobrisasdelnorte.com/userfiles/file/nerugadonosoxo.pdfIn PDF document text
    • http://miroslaws.com/ckfinder/userfiles/files/38325502259.pdfIn PDF document text
    • http://patroha.hu/file/35490608010.pdfIn PDF document text
    • http://scouttautomotive.com/editor_uploads/system/files/losamezamogalazur.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/liwawofigezuvez.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/5ee42f1300859118772b5dea46953fc6/bikuwagiridizototaw.pdfIn PDF document text
    • http://saltokisport.com/uploads/files/64167601358.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/suwifinosujopajumi.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/17078458176.pdfIn PDF document text
    • http://clinicaveterinariagussago.com/userfiles/files/65325215689.pdfIn PDF document text
    • http://reedxtrainternational.com/uploads/pages/file/wojukadome.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/vevakibobug.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/8245548070.pdfIn PDF document text
    • http://ameshamagazine.com/js/upload/files/safawonuliki.pdfIn PDF document text
    • http://american-security-inc.com/assets/ckfinder/userfiles/files/51858908191.pdfIn PDF document text
    • https://fiscconsulting.com/userfiles/file/magakexusomepujaxowim.pdfIn PDF document text
    • http://haitrungkim.vn/uploads/userfiles/file/74945736633.pdfIn PDF document text
    • http://amsasecretariat.fr/userfiles/file/76982903550.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=game+of+thrones+pilot+script+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEF 10924 bytes
SHA-256: 14a66161d9c9656ada061753f367675914188880bb9e36659731e4281a1dd143
font_01_sfnt_off0000d707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD707 16904 bytes
SHA-256: baaccfa3e1a629ac31d4b1c0d288936ccdeb95e02bae9de1fe4437c1165da51b
font_02_sfnt_off000102b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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