Malicious PDF — malware analysis report

Static analysis result for SHA-256 601b04967301dd2d…

MALICIOUS

PDF

75.8 KB Created: 2021-09-25 16:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7e2276d7d3849c666770377b5e3e7e74 SHA-1: e4fda6f84d5ea99894da3bca1b295ada0943c43f SHA-256: 601b04967301dd2dcef02bd7b8aba727c190f8f32b6482e5dd4016864bcd6e09
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to disposable domains and form a link farm, a common tactic for phishing or distributing further malware. The PDF's structure and embedded content suggest it is intended to trick users into clicking these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://allier-genealogie.org/File:/fixapuruberufe.pdf In PDF document text
    • http://zuszdounky.cz/files/5898516153.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/zenujetuxewiruvivow.pdfIn PDF document text
    • http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/tajomajezuwifig.pdfIn PDF document text
    • https://limpiezasinasel.com/userfiles/files/87733870091.pdfIn PDF document text
    • http://sochi-vitrazhi.ru/ckfinder/userfiles/files/lapixatozasijifawem.pdfIn PDF document text
    • http://chia4kids.ru/ckfinder/userfiles/files/24607793464.pdfIn PDF document text
    • http://packagingandfoodmachinary.com/userfiles/file/zivagozepedumim.pdfIn PDF document text
    • http://iphysiology.ru/upload/40069591285.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/161441a938eeac---kujalerel.pdfIn PDF document text
    • http://zsdbiopharm.com/upload/files/renozeximomofarosog.pdfIn PDF document text
    • http://immobilieninvestors.com/userfiles/file/10060207325.pdfIn PDF document text
    • http://kedehg.com/ckfinder/userfiles/files/walugezepotegewadan.pdfIn PDF document text
    • http://uran-berlin.com/userfiles/file/doxipulolotogikuruwiz.pdfIn PDF document text
    • http://bn-biz.com/userData/board/file/muzedopibenaxe.pdfIn PDF document text
    • https://epagneuls-bretons.fr/caningest/images/file/legawebupefododarakos.pdfIn PDF document text
    • https://www.syria-report.com/sites/all/libraries/ckfinder/userfiles/files/fejugunodazigotosexo.pdfIn PDF document text
    • http://www.bash.cl/media/file/pifomipinoramoxevudikon.pdfIn PDF document text
    • https://mraos.com/web/userfiles/file/favomisogomuwebezopi.pdfIn PDF document text
    • http://mcap.cz/images/uploadedimages/file/xegoxudakanitadirexom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=super+mario+64+odyssey+v5+downloadPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB982 20444 bytes
SHA-256: 1e98bec66a46f423eb8b7b77cbf85b76b8304d0665f61bd72b42846057e93d5f
font_01_sfnt_off0000ef82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF82 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10799 11276 bytes
SHA-256: 454d5870bb184908088e7e639b12a2eb7aace938cf9762b0ca8975c8ad676e16

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