Malicious PDF — malware analysis report

Static analysis result for SHA-256 def6ff9674941062…

MALICIOUS

PDF

89.0 KB Created: 2021-08-08 21:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2b13c7a51c0d40ace96618f40caf6ea1 SHA-1: 96b402af01968c3021524a0dfb235dba03ca5f04 SHA-256: def6ff967494106293f22a6c2db7979942b04af97779d45578ae4495b634201c
156 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and link farm heuristics, indicating it is designed to redirect users to malicious websites. Several URLs point to compromised WordPress installations, suggesting an attempt to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • 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
  • 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://drafthe.ru/uplcv?utm_term=rituel+kabbale+pratique+pdf PDF link annotation
    • http://trongtinpc.com/luutru/files/50345381292.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/1a31ee31dd01f5c0b32e99b174fc2aee/pipaduzubolanagokelepika.pdfIn PDF document text
    • https://aaaxxion.info/images/file/26388142098.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b086f5dbddb---gizil.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/57531133998.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/097ed67a969c9b8eb4fc8050580e390b/xugogapitoben.pdfIn PDF document text
    • https://micro-churches.net/uploads/file/49908412236.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/73950195022.pdfIn PDF document text
    • https://i-intelli.com/ckfinder/userfiles/files/datikobofe.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/pajapidosi.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/35c778ddd43ea20c60273b5913c24a1d/59368412240.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/thjo7og3tbjjtp7lg1iurpel11/gupejibonigupof.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/xapupigutoluxal.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607524ef24626---mirenopifo.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/86fd4ff9e9d3f2b4eb246415f797c178/48841310286.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/64264963768.pdfIn PDF document text
    • https://samudra99.com/contents//files/70631211661.pdfIn PDF document text
    • http://keralabiblesociety.com/fck_uploads/file/12774622616.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b185acc0d---wozuvatefeketexolepis.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b14f4c5e654---15583486965.pdfIn PDF document text
    • http://schokozentrale.de/idata/94461673861.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607447ab03681---41621628048.pdfIn PDF document text
    • http://ozanatalan.com/iboard/includes/userfiles/files/nireromu.pdfIn PDF document text
    • 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_off0000f8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AA 17856 bytes
SHA-256: 1f6e5202ee291065aa598bdf8f685a93f5b26310136ec20aed55786424f3ba80
font_01_sfnt_off000124e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E5 10624 bytes
SHA-256: 24590881b71b01bc880f4cacb1987f162c380d3b2d9f104352b4456518c4c0e4
font_02_sfnt_off00013cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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