Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2338d6710e5749…

MALICIOUS

PDF

72.0 KB Created: 2021-09-09 03:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 710bd06371582128f74dc92e26635ae3 SHA-1: 6fb4bee775774ebd61ccb290616c88bb2c91362d SHA-256: bf2338d6710e5749a783151161e5baa27220638f8fc90712d6dfc277e75632b7
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, many of which are structured as link farms. Heuristics indicate the PDF is a link farm on disposable hosting and is flagged by ML classifiers and ClamAV as malicious phishing content. The presence of external URIs and the overall structure suggest the primary goal is to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8257

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://drafthe.ru/uplcv?utm_term=free+virtual+number+apk PDF link annotation
    • https://km2804.com/ckupload/files/1288405507.pdfIn PDF document text
    • http://capitaloffice.pl/fotki/file/pakawigelebomukov.pdfIn PDF document text
    • https://denimder.org/resimler/files/90363595173.pdfIn PDF document text
    • http://we2meeting.com/ckfinder/userfiles/publics/files/pulubuxegupujixe.pdfIn PDF document text
    • https://dichvumayphoto.vn/webroot/img/files/nolup.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/82077292088.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/88329779876.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/xedobivuxuja.pdfIn PDF document text
    • https://studiovizia.com/webroot/img/content/files/11007745613.pdfIn PDF document text
    • http://gamaxmotor.cz/data/dokumenty/wedukido.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/55367229729.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/91192184241.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/e020545ec906417e3db21094e553f971/sadukadagexesozaw.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/11839583776.pdfIn PDF document text
    • http://lucchetta.net/userfiles/files/fazazulapi.pdfIn PDF document text
    • http://yas-center.ru/userfiles/file/gidoxuvu.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613655c69e52a---34041387263.pdfIn PDF document text
    • https://biomedchita.ru/imeg_master/file/lezonosit.pdfIn PDF document text
    • https://endeligmandag.no/e-brev/data/div/62074340473.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/12460195603.pdfIn PDF document text
    • http://good163.cn/Uploadfiles/files/minevumazosez.pdfIn PDF document text
    • https://12shio3.com/contents/files/lupibakamogiwitulisojase.pdfIn PDF document text
    • http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17183887524.pdfIn PDF document text
    • https://bwhe.in/ckfinder/userfiles/files/ditoza.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_off0000d493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD493 1868 bytes
SHA-256: b44e304f4199d162c520aa61e4565b27969aa952fa2ee1db3f4cf671ae1a9eb8
font_01_sfnt_off0000dd46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD46 25004 bytes
SHA-256: 02aad05b324c79ab064c086501bbb00d7057458aa480872c6fdde4251864171d

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