Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69a52634d50e7bc…

MALICIOUS

PDF

69.0 KB Created: 2021-08-18 04:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7dcfc6ca91b3d656cca36d7370209f26 SHA-1: 31f5a08d72ae5258ceeeed71d755ac828377d941 SHA-256: f69a52634d50e7bc2086355be25d8daca71d199bd11b86858c339c1109369430
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URLs, many hosted on compromised or disposable domains. This suggests the file is designed to redirect users to malicious content, potentially for phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8243

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
  • 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.
  • 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
  • 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://irlanc.ru/uplcv?utm_term=altered+states+of+consciousness+pdf+download PDF link annotation
    • http://phsclassof1970.com/clients/875774/File/24683987422.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b86a09d0840---rijadesal.pdfIn PDF document text
    • http://sns-russia.ru/userfiles/file/xebevu.pdfIn PDF document text
    • http://954move.com/clients/4890/File/74154903343.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/n92202nmjimuvj2klm33dqpm4t/towuxesutulugemij.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/15338211129.pdfIn PDF document text
    • https://skyzoan.com/cake/beta/userfiles/file/gakozesowotoxusumefekimi.pdfIn PDF document text
    • http://thebrownbag.vn/upload/files/15223424037.pdfIn PDF document text
    • http://cy2hand.com/userfiles/14112974053.pdfIn PDF document text
    • https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/bojobisutadiva.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/lolenipowumoz.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/qi7k11l1r4gbnbu72ept0t1if6/motuz.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/k34dulk046adgv5j66o3rrq5dj/16001972269.pdfIn PDF document text
    • https://www.jakketoes.be/ckfinder/userfiles/files/19337832724.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/pekokom.pdfIn PDF document text
    • http://theettiares.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/rujolisatozeler.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160822e73bfb8d---menaxiguxezikazika.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9061ada56.pdfIn PDF document text
    • http://songhakbbq.com/uploads/files/nirasimixetowe.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/3a9606318ebbea62f450ef7eacbe171f/41992492249.pdfIn PDF document text
    • http://tuhocxuatnhapkhau.com/uploads/ckfinder/files/48307756860.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/dikexijino.pdfIn PDF document text
    • http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26690085829.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/sl4kv7rdptahvqutlvf59ri3b0/48898450528.pdfIn PDF document text
    • http://langmoon.jp/js/upload/files/83871907042.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/82dc4dbbe051d1eaecf17f8fd5e9c163/15688777045.pdfIn PDF document text
    • http://www.dismaplant.com/ckfinder/userfiles/files/luxatudujatope.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF24 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1