Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f16f0ef939f709…

MALICIOUS

PDF

58.2 KB Created: 2021-10-09 12:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 064a297f5f01b1a4bb8fd08172e2599a SHA-1: 2d9c7f91a4ff21866ba01253d79241c9a67bb3bd SHA-256: 45f16f0ef939f70922dde2320258698979078d42bc1f7ef05b5390f0f9d105f6
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with many pointing to disposable or unknown domains, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the structure and URL patterns align with common techniques for redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7396

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 http://abwbaltimore.com/uploads/files/davefiguk.pdf In PDF document text
    • http://uniquehotelsolutions.com/files/others/3205872829.pdfIn PDF document text
    • http://jadever.vn/Images_upload/files/84465496130.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16160c4c4df791---30825437019.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/vakalid.pdfIn PDF document text
    • http://sampoernastrategic.com/uploads/image/files/xidevatebikobu.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615dc30875d4f---67053800464.pdfIn PDF document text
    • http://le-nora.com/userfiles/file/nafabubuxekasoga.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/3461961716.pdfIn PDF document text
    • https://costarica4d.com/contents/files/4825288104.pdfIn PDF document text
    • http://gamulchi.org/userfiles/file/jurotarovezugepudojatexat.pdfIn PDF document text
    • http://linyuepharm.com/upload/files/befase.pdfIn PDF document text
    • http://minhledtran.com/luutru/files/79993650907.pdfIn PDF document text
    • http://moscowfashion.net/content/xuploadimages/file/70831045302.pdfIn PDF document text
    • http://guchen.ru/d/files/1357650796.pdfIn PDF document text
    • https://cosanuesa.com/componentes/editor/ckfinder/userfiles/files/betekewuvuxe.pdfIn PDF document text
    • http://gardenofsound.com/userfiles/files/21223236232.pdfIn PDF document text
    • https://brawlcall.com/ckfinder/userfiles/files/kotubatef.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/61015354616.pdfIn PDF document text
    • https://njshore.drinkpoint.com/uploads/files/38094189813.pdfIn PDF document text
    • https://on-the-markmarketing.onthemarkmarketing.com/userfiles/file/kunuriliviwinagufaraku.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/95090733422.pdfIn PDF document text
    • http://bbu.vn/Images_upload/files/fuzedibuzojifibe.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/dawadobazunorofijonobol.pdfIn PDF document text
    • https://inprovitperu.com/ckfinder/userfiles/files/momaligaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=don+draper+outfitsPDF 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_off0000baa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d2b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B9 10544 bytes
SHA-256: 686565ba21212d85d10aaadfb24191ad1ea14db7d0c4b45f872ec239f129c36e