Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7fd7921cc1a175…

MALICIOUS

PDF

63.8 KB Created: 2021-10-05 07:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 298541c20caa2d0a282092f89ae23976 SHA-1: ae4c57c1caa0f96824b76e2dab8951377c6b9148 SHA-256: ff7fd7921cc1a1759df4d4f9dec84f242091b30b71076f33e2477ce295c91cb6
124 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to suspicious domains, suggesting an attempt to redirect users to malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm strategy, commonly used for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://hla.vn/upload/files/92983173061.pdf In PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///xezibegujalemapafo.pdfIn PDF document text
    • https://dfkcnc.shopper-store.net/file/files/12696874439.pdfIn PDF document text
    • http://domingo.hu/ckfinder/userfiles/files/jebur.pdfIn PDF document text
    • http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/fexin.pdfIn PDF document text
    • http://studiosiciliani.eu/userfiles/files/belimoj.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144bd2f5290b---38151880863.pdfIn PDF document text
    • https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/37300462838.pdfIn PDF document text
    • http://sadrokartonyhk.cz/images/fckfiles/file/47308076924.pdfIn PDF document text
    • http://allivecoat.com/userData/board/file/menovosidijijaxu.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/xumuxugozewesepesikud.pdfIn PDF document text
    • https://larustt.com/upload/ckfinder/files/gonisulifot.pdfIn PDF document text
    • https://lodoshosting.com/calisma2/files/uploads/84220697307.pdfIn PDF document text
    • http://focalthai.com/file_media/file_image/file/71906835203.pdfIn PDF document text
    • http://idealthailand.com/file_media/file_image/file/fabonuzed.pdfIn PDF document text
    • http://duplisite.com/userfiles/file/bivexigures.pdfIn PDF document text
    • http://tajesink.com/Uploadfiles/files/57194544494.pdfIn PDF document text
    • http://kfoodntea.com/dataroom/file/10837960947.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/33436885898.pdfIn PDF document text
    • http://www.travelwithtaangoo.com/img/file/zalizusifopexiwesuga.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161445bf71925e---73180611558.pdfIn PDF document text
    • https://mylin.in/ckeditor/ckfinder/userfiles/files/83456326221.pdfIn PDF document text
    • http://iccj.jp/images/uploads/fckeditor/file/1145028798.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=estimate+by+roundingPDF link annotation
    • 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_off0000d6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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