Malicious PDF — malware analysis report

Static analysis result for SHA-256 bacd134b9cf1464f…

MALICIOUS

PDF

67.0 KB Created: 2021-09-19 12:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 66ffd4e249a70debb931d62dd1412542 SHA-1: a0f649a952124a7fd43ad20bebac20ed5541c2b3 SHA-256: bacd134b9cf1464f65de0e0583f4ba75774fc2a04802ba11a153b571f14b7871
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery through these external links. No scripts were extracted, but the structure itself is designed to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6824

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://tekmaker.com/upload/files/vifowu.pdf In PDF document text
    • http://makassitools.com/userfiles/file///66259291678.pdfIn PDF document text
    • https://chaletsuenodesol.de/files/gunidaxuvatefume.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/64157194258.pdfIn PDF document text
    • https://fancybox.pamlskovnik.cz/ckfinder/userfiles/files/12217762101.pdfIn PDF document text
    • http://galettedesrois.eu/userfiles/file/73498405055.pdfIn PDF document text
    • http://kdekdyjak.cz/data/51114068653.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/ummq2hpf5vpc5rjn0s6p1prvph/tawezedunesebav.pdfIn PDF document text
    • https://giaynangchieucao.com/userfiles/file/judojase.pdfIn PDF document text
    • http://dierenwinkelindex.nl/images/uploads/lixafotuzopewope.pdfIn PDF document text
    • http://csc0512.com/userfiles/file/20210918041744_897xuh.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136c6e35a59f---38614636475.pdfIn PDF document text
    • http://twgo8.com/uploads/base/files/202109050327458274.pdfIn PDF document text
    • http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/34925630666.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/7235e3f7f3907413c8bd5140e1f44ef7/fewenewoxipuxininulara.pdfIn PDF document text
    • https://novinfasteners.com/userfiles/file/68974951321.pdfIn PDF document text
    • http://bayernglobal.de/userVZ/file/kuvise.pdfIn PDF document text
    • http://feuerwehr-mittenwalde.de/mediathek/files/botadixinobamuxedudo.pdfIn PDF document text
    • http://trips-in.com/ckupload/files/388929546.pdfIn PDF document text
    • http://everintelconsulting.com/upload/file/202109111807255890.pdfIn PDF document text
    • http://cana.vn/uploads/userfiles/file/97405150998.pdfIn PDF document text
    • http://thriftstorewebsites.net/flash/thriftstorewebsites.net/file/rukugefe.pdfIn PDF document text
    • http://griesvoegwerken.nl/UserFiles/file/janurexuvefezotemapo.pdfIn PDF document text
    • http://shepardinteriordesign.com/rw/upload/file/57943326669.pdfIn PDF document text
    • http://addisonplaza.abwingsmd.com/uploads/files/sojebipiwovudukewe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=bee+bot+activities+year+1PDF 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_off0000ef46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF46 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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