Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0546a4d409bbfa…

MALICIOUS

PDF

82.6 KB Created: 2021-09-11 06:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9ebf55fa9c50f27478c7ca2ad4445870 SHA-1: 9501f152fca270573da73c8a151858c6b8fcc687 SHA-256: 6d0546a4d409bbfa4a00b213dbbda8edfd457b1a2e8cffcbadd4867967bde9ac
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. The PDF contains numerous embedded URLs pointing to various domains, suggesting an attempt to direct users to external malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://dnmpaint.com/sdcc/images/file/93378516679.pdf
    • http://bavlas.lt/ckfinder/userfiles/files/14939621566.pdf
    • https://girisimhaber.com/uploads/file/81459859765.pdf
    • http://e-kva.ru/admin/ckfinder/userfiles/files/mekizoburorumex.pdf
    • https://hotelite.in/userfiles/file/jalotodimuz.pdf
    • http://animationcoach.com/userfiles/file/tibojilugubedigogotemu.pdf
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/51083478887.pdf
    • http://ailizia.com/userfiles/sefebilaz.pdf
    • http://veterinariacomportamentale.it/userfiles/files/tudobevifenu.pdf
    • https://kamionosnyelvlecke.hu/userfiles/file/kuzizuxiladamuzasusuposul.pdf
    • http://americandeliorder.com/uploads/files/47935996413.pdf
    • http://phantasos.org/userfiles/file/33510519430.pdf
    • https://bbpartner.cz/userfiles/file/zagodazufimejuranigeze.pdf
    • http://pzhjintai.com/upload/files/35388591053.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310b0af1415---vizuponapomiwalifibejitew.pdf
    • http://master-stroi76.ru/userfiles/file/jujedopojawosijokaxope.pdf
    • https://manorhair.com/uploads/files/202109012153555010.pdf
    • https://mariapolis.es/ckfinder/userfiles/files/67920387637.pdf
    • https://termofriz.rs/files/titewumafugorasun.pdf
    • http://dreambeauty.kr/upload/fckeditor/file/9284325749.pdf
    • http://hatowo.com/app/webroot/uploads/files/dawuvolesuxemilobo.pdf
    • http://deltools.com/userfiles/file/538935985.pdf
    • https://careersourcechipola.com/files/public/26712969364.pdf
    • https://ekinyalitim.com/depo/sayfaresim/file/zoromopujivod.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=k+10+syllabus
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f6.bin
bfab1554931dba7628700e8bc144b1b1e1ee36cd632ae8cbc0914ffd439ec1b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F6 17580 bytes
font_01_sfnt_off00010e85.bin
33eb8f179ba6eaa5d02895cf510ff9d648274ed00a1eb37e73f7cd2dc25fc223		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E85 9972 bytes
font_02_sfnt_off000124cf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124CF 16792 bytes

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