Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce1404ab894b5dba…

MALICIOUS

PDF

76.2 KB Created: 2021-07-21 14:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5588ecb81489ae495b4a7d0385738795 SHA-1: 7bca88e1f11de309b29eca7d93224060048e4d75 SHA-256: ce1404ab894b5dba0751c117bbc8b86b189bd47899fbf42b2c44013db1193da1
124 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to websites that appear to be compromised CMS upload directories. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely to lure users to malicious content or phishing sites. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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 http://morard-mcf.fr/data/Files/83372022030.pdf In PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/simivowogawudetojowawigif.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccf8059904---3068123982.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d318c0495f---kozibotobiroza.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/feleloterixadawa.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160853a5455355---jirazetomuludibimaw.pdfIn PDF document text
    • http://jaatkinson.com/userimages/60277600582.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/teduwubop.pdfIn PDF document text
    • http://kasintorn.com/images/upload/files/damusinido.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160c41a41ea0d2---gapivedulakofarumezuba.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16082ef085f2ff---konodeluburora.pdfIn PDF document text
    • https://angkagenap.com/contents//files/94247969448.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef92d0baac---wilufaxomurigesejedube.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/45018547904.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/je3a7hv6tkl9ro85p6bn7klor0/gotabirezonepidev.pdfIn PDF document text
    • http://domingo.hu/ckfinder/userfiles/files/94514988072.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb112ba2a3---ganuno.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/aa93bcpt6bc6knc6lnrofib5gl/98009443316.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/75457ea5eebb3a1e85172471fae9b804/99929209026.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/lojepol.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e591ab1d83---miruwerowefofigokonal.pdfIn PDF document text
    • https://perfecthospital.org/FCKeditor/file/norigoregenepusulutotano.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/3470673be234aa78b149af4b797fda02/31030413594.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803e70b38f3---97498302300.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=one+piece+belo+betty+cosplayPDF 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_off0000e5b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B3 10544 bytes
SHA-256: d31b73eee7a6cc07c7db5146848f2dc43557de035e116e0ec6a3e48b0301e163
font_01_sfnt_off0000fdb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB0 17256 bytes
SHA-256: 4e6d0e0be31fe2119462a32f7b644e57cda40abbd2de4038b9e4e978e7b26d24