Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dec60c6353f820d…

MALICIOUS

PDF

78.1 KB Created: 2021-08-18 05:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1e62b30fff184e83e6c102d172917c06 SHA-1: 8a99fea8217cd438b6ba53020085d261026608d9 SHA-256: 3dec60c6353f820d6e99ae55f204bb2efc1ba32e0bf1c67ee012784d68ff8df9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to domains associated with link farms or compromised CMS uploads, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8708

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 http://gildiamasterov.ru/userfiles/file/lemakomegu.pdf
    • http://soepcentrale-dekeyser.be/userfiles/file/kesov.pdf
    • https://gobelsprofil.com/upload/files/jotofavupul.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c3dbc09352a---kokofosax.pdf
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/8df0632edfc2bbc12f50eaa938af1ba7/japuge.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761182a133f---pekunurabateza.pdf
    • http://robertoantoniz.com/resources/original/file/xorud.pdf
    • http://timeyear-v.com/userfiles/file/sepuwitexe.pdf
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/djti9a88fg6ge5tntulrpd0n97/wazowafasanotesudevawix.pdf
    • http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/24074826349.pdf
    • http://soles2walk.cz/data/file/gixudofalidapitepata.pdf
    • http://crmrealty360degree.in/userfiles/file/55953822915.pdf
    • http://sns.hu/_user/file/21543300153.pdf
    • http://banghetretruc.com/media/ftp/file/22811229309.pdf
    • http://acgroupenterprise.com/userfiles/file/jafoxibezuk.pdf
    • http://brilsports.ro/userfiles/file///xarumigatu.pdf
    • http://monkeytailranchdonation.org/clients/e/e8/e82116dd0b5861b0917add2a69208af2/File/57721164575.pdf
    • http://deltools.com/userfiles/file/81841332732.pdf
    • http://spamsmsgiare.com/media/ftp/file/98025245597.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c865020bfc---faxemo.pdf
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7c0780ecc---43237956590.pdf
    • http://wefocusdesign.com/upload/files/vimudufaki.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=what+did+urie+bronfenbrenner+study
    • http://pro.ovh.net/~tribuene/images/banque/file/3315544355.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107b4.bin
b8bae1996ae8a6a8ed06a2abdc9006b84c948f04f50e32d5dd97119fd4ad9123		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107B4 10752 bytes

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