Malicious PDF — malware analysis report

Static analysis result for SHA-256 968e53ab2ac070a0…

MALICIOUS

PDF

76.2 KB Created: 2021-09-03 18:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ce9db3c41b76d6ed563dedba7e903654 SHA-1: b61ca1a3120c83a9346572518128c2d3997424d3 SHA-256: 968e53ab2ac070a0a503aa3f570e94734e05156ed310aab689c1fb6c20f72394
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm directing users to multiple external URLs, some hosted on compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure suggests exploitation of PDF vulnerabilities or social engineering via the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8530

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://nutrishop.in/ci/userfiles/files/48142922894.pdf In PDF document text
    • http://agecarekorea.com/ckupload/files/80925588589.pdfIn PDF document text
    • http://cartopack.com/Images/file/79285802357.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9635c133a---41923757983.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/392jnbd4i2masrqe8ken7gkpk0/67600747221.pdfIn PDF document text
    • http://fitsiluet.cz/data/file/28679404019.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/4b742c5c460bee625266d81200ee9dde/49268217804.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/847df983f4129fc5b7cd7e8678b737d1/96586774543.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/eeda5d81875048ccbc7401286f011396/68678037523.pdfIn PDF document text
    • http://insfilings.com/skyzone_classic/upload/files/pajoj.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/5a99d5529be059c63b25476f0027d08a/57898799464.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/bumumewomilorivon.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/60130764314.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/34434736407.pdfIn PDF document text
    • http://meskerjager.nl/media/files/12610487135.pdfIn PDF document text
    • http://sunwisechem.com/Uploadfiles/files/barebubuzojeledu.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a153014a2---vulesuxokefusowelivex.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8741e2767---sopumo.pdfIn PDF document text
    • https://strechybenesov.cz/content/bejorixoluga.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/a3ba6d9c1e74700aac521c64dc96d018/poxagupujulajelejuk.pdfIn PDF document text
    • http://studio-orlandini.com/userfiles/files/jetijitolitatu.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/a688e3b96fb74967a52d0504661b482d/kasaxu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=insulin+biosynthesis+secretion+structure+and+structure-activity+relationships+pdfPDF 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_off0000e354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE354 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6B 11124 bytes
SHA-256: 3ffb6323c40514bc307648902f9c4988569392c76c063e943e48f3d264831c5f

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