Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ccdb9c3bca4048b…

MALICIOUS

PDF

70.1 KB Created: 2021-09-03 16:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: dc0f06862cf4e9a42cf92fe7baeca26c SHA-1: e90d3162a8eedb8d9237ee518e4bd429a962ff48 SHA-256: 8ccdb9c3bca4048b956307dab3ec59141ee422f28064698348de895e1b71d1c9
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a Pdf.Phishing.Trojan signature. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable domains. These links are likely intended to lure users into phishing scams or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4539

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://infrive.ru/uplcv?utm_term=present+simple+vs+present+continuous+pdf+autoenglish PDF link annotation
    • http://dragonera.cn/admin/userfiles/file/gogudowajaniwuweji.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f1166d00e63---6519544539.pdfIn PDF document text
    • http://tincorner.vn/uploads/files/62945437999.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4e7158e7b2---ximutalobisepafox.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c356b933c---foxufagarujarawixubux.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b969975fd5a---61312587534.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/bdbqt570svjmfhgit6i2gphi31/13240653825.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/704b2b00f36c210cb1c776c52037cf68/84551092503.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/gjm1qie3m7l1depshsidcjjgi0/xavitijixopi.pdfIn PDF document text
    • http://lammensfilip.be/uploads/files/26442381071.pdfIn PDF document text
    • https://5of7edwardstreet.com/assets/media/files/73942011392.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/96579289865.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f9865a9245---radutuxuweb.pdfIn PDF document text
    • http://myshopgroup.com/userfiles/files/xonugepamifexekapexe.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/v1228vfk1icmn1ie0cjaodeao2/68047529347.pdfIn PDF document text
    • http://beiks.info/public/file/6185546863.pdfIn PDF document text
    • http://calzaturificiocatia.it/userfiles/files/xopenawegigawera.pdfIn PDF document text
    • http://harringtonandlombardi.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/motuzezikegiw.pdfIn PDF document text
    • http://thoitrangvabaoho.com/Images_upload/files/63345487297.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/88c2ef356468cf11d28549847bb4f60a/27876761314.pdfIn PDF document text
    • http://archi1919.com/smlclub-files/file/paderesoj.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/22056922972.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/724f86788c393dd3cca0a0132a597454/parimelaxixasorobomire.pdfIn PDF document text
    • http://happyhanool.com/ckupload/files/30345062606.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_off0000ccd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD3 11232 bytes
SHA-256: 624e7e2f432edbd382e671d2708f3d280c7fc7e62b931f0be06bad2adf49b91c
font_01_sfnt_off0000e6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1