Malicious PDF — malware analysis report

Static analysis result for SHA-256 567001170e5abc45…

MALICIOUS

PDF

75.1 KB Created: 2021-09-17 09:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 362ba1f27d1b3689b84c6c447765d6be SHA-1: 938e9a3cfca6d21a5b1c37d37b02009e30913baf SHA-256: 567001170e5abc4585478e7b05a39896246187ceed0d15f33a2a3d667c0009fa
134 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, indicating an attempt to redirect the user to malicious websites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests a large number of links pointing to potentially disposable domains, reinforcing the phishing or malware distribution intent. The ML classifier and ClamAV detection strongly indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=head+first+python+2nd+edition+pdf PDF link annotation
    • http://architettorobertafasola.eu/userfiles/files/3218539441.pdfIn PDF document text
    • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/napowo.pdfIn PDF document text
    • https://htchninc.com/d/files/senofalojifaril.pdfIn PDF document text
    • http://fantacyhandicraft.com/userfiles/file/tiwuzizaxetawevuguza.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/vujevudeselinupa.pdfIn PDF document text
    • http://loaamtran.com/files/usersfiles/files/pifotajelepovibiju.pdfIn PDF document text
    • http://pensjonatagat.pl/userfiles/file/49613386052.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/sasurojiresipajoxe.pdfIn PDF document text
    • https://sledovani2.gpshlidac.cz/www/userfiles/files/87806389277.pdfIn PDF document text
    • http://starroadchina.com/userfiles/file/69953901952.pdfIn PDF document text
    • http://thegioimaychaybo.com/app/webroot/uploads/files/padajofugomazugu.pdfIn PDF document text
    • https://gionggiacam.com/ckfinder/userfiles/files/27338034602.pdfIn PDF document text
    • http://bjavc.com/filespath/files/20210914124546.pdfIn PDF document text
    • http://e-hematologica.pl/users/file/guwusezasofuwizaganagevap.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/54474792504.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161319f5c74f91---65027620224.pdfIn PDF document text
    • https://franchisefarm.franchiseharbor.com/files/files/34761345029.pdfIn PDF document text
    • https://liho.cz/UserFiles/File/nivutibafu.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/40950684298.pdfIn PDF document text
    • http://baldonimarcostudio.eu/userfiles/files/zasukuxowematowidozamusox.pdfIn PDF document text
    • https://ccskin.com/geektic/files/fugepigolalezurum.pdfIn PDF document text
    • https://autotoner123.com/home/autotone/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/21151231567.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/73sv32b3fcos4cl27oec26dvdn/wisoxuwaxuzasip.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_off0000c2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E0 16676 bytes
SHA-256: 652c5d03cbff2363459ca0b2af1367fe2fa24b858f299f736374d0fddd946573
font_01_sfnt_off0000ee3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3E 10772 bytes
SHA-256: 0b03e2a558c020a8f31af3932d669841c4c1bdafe552895ca90eaeaebaad3c79
font_02_sfnt_off000106ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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