Malicious PDF — malware analysis report

Static analysis result for SHA-256 24611b741d11cb61…

MALICIOUS

PDF

63.7 KB Created: 2021-10-01 10:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 7392c22963e3c11be40b933984173924 SHA-1: c9578cf4bba33e7ec51766f2faaeccabd325eb51 SHA-256: 24611b741d11cb61ec13ee2b7bfb92779a06a1d2457226f428bdc542340d84e9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on low-reputation domains, suggesting a tactic to distribute malicious content or phish for credentials. The ClamAV detection further confirms its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4355

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
  • 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://www.comperat-89.fr/ckfinder/userfiles/files/59060707787.pdf In PDF document text
    • http://sitoad.com/bbqjoekey/files/202109050943192628.pdfIn PDF document text
    • http://bfttacg.marketsearching.com/upload/files/mazuzivaf.pdfIn PDF document text
    • https://habibitours.net/ckfinder/userfiles/files/30294051740.pdfIn PDF document text
    • https://8cj2aja7-8mxb.com/contents/files/palefiwoxoxunitot.pdfIn PDF document text
    • http://yenidenyuzlendirme.com/ckfinder/userfiles/files/ferizos.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/jopulimimatorema.pdfIn PDF document text
    • http://riverhouse.at/pcms/content/file/32443716771.pdfIn PDF document text
    • http://topaslt.com/userfiles/file/vorogo.pdfIn PDF document text
    • https://hebatkeren88.com/contents/files/natazuxopinemo.pdfIn PDF document text
    • https://riosemarescentrodemergulho.com/ckfinder/files/45268672589.pdfIn PDF document text
    • https://newshieldinsurance.com/demo/gsa/final/images/file/98330818462.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/36928407118.pdfIn PDF document text
    • http://machi-tomo.xyz/js/ckfinder/userfiles/files/pusoxukugu.pdfIn PDF document text
    • https://anukulagrotech.com/ci/userfiles/files/wedoguremim.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-9-13/20210913015639756164.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/vapujuga.pdfIn PDF document text
    • http://akademibt.com/resimler/files/4060972257.pdfIn PDF document text
    • https://wedding-photos.cz/userfiles/file/91214748027.pdfIn PDF document text
    • http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/kaxumedexupefowamutuje.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133275963fff---36882295462.pdfIn PDF document text
    • http://hermandadperdon.es/userfiles/file/39020961325.pdfIn PDF document text
    • https://ngonluathan.com/images/ckeditor/files/23517356191.pdfIn PDF document text
    • https://mahanakhon.pacedev.com/ckupload/files/dotomemad.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131c50fb3ab1---kalazize.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=inotia+4+mod+apk+free+shoppingPDF 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_off0000b418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB418 11020 bytes
SHA-256: d089ffa528a0baf7a1e32e080fb3e31a344ff1594aadb8ffe20619e48da9a0e0
font_01_sfnt_off0000cd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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