Malicious PDF — malware analysis report

Static analysis result for SHA-256 192ace750df14673…

MALICIOUS

PDF

90.5 KB Created: 2021-06-29 16:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: d46295da86a3fba8ec7108b05541c9b2 SHA-1: 4ea084ce5b0808fd9b32848f204cc59940c915a3 SHA-256: 192ace750df146731841192727b866e20c3e120715255806fc3caa90d459660d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to various domains, many of which appear to be compromised WordPress sites. The primary purpose seems to be directing users to potentially malicious content or phishing sites, indicated by the presence of UTM parameters in some URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9765

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://infrive.ru/uplcv?utm_term=cheat+the+warrior+ppsspp PDF link annotation
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b25be73262---watopatezomoranisew.pdfIn PDF document text
    • http://stalmont.eu/userfiles/file/42724617610.pdfIn PDF document text
    • https://champion-osk.pl/userfiles/file/dedudanebidutasowesibadu.pdfIn PDF document text
    • https://slide-bearing.com/d/files/87503269668.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cae7ebbcc---kaxifawubokojidomotu.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/ef328e63243088a641c1c11cb56090c3/bewerorefiloginewate.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074822267900---jurutofosupi.pdfIn PDF document text
    • http://stphilomenaonline.org/userfiles/file/delaforotoweradolaju.pdfIn PDF document text
    • http://pchs1967.com/clients/b/b3/b38b0c0be7ceca4b309dcb684d78a7c5/File/71519508702.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/50386722811.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160abd4bda01d2---rukovunexeso.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/63988329627.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4a22df28b---14026260954.pdfIn PDF document text
    • http://revucue.com/ckfinder/userfiles/files/mofesofoz.pdfIn PDF document text
    • http://aptatravel.com/clients/4/48/489dad2d2d8436d4c085fc0ccdc2d1b3/File/2448743174.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0c1e2c5eed---47936504228.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/1jpg819bjgd4n9jkm03289oeat/fodixujazugexozazo.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/na6bq02livajjv97t1mkcmouai/pugikofaxere.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/53664529723.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/ejirr6a5ep6qco40lcalgt6te7/bonuvebokomerisevonukax.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c758466e6b8---fotaxezuxunokas.pdfIn PDF document text
    • http://wisdomtours.net/upload/file/fibavesalazuvaxewinum.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/7bead9a9e8b041dbdddc77c40518bd6a/22443147125.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/15054123015.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be0658aff33---14707019686.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/aktd5eh830k68k1ehsba1ijo9s/51117513652.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A3 10316 bytes
SHA-256: 51dc1a0c82a23a79f0c3816131cfb94a57882ca3b2a84e03dbfe5fae7b62955a
font_01_sfnt_off0000ff27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF27 17276 bytes
SHA-256: 7f909c96c45edb348fe7fb5ca13a6f04a730532639362977cffa3e74f5004066
font_02_sfnt_off00012c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C75 16344 bytes
SHA-256: 5cd8a120e106fc2d4fc1855603a636a3ce922decfb1b4d98f17a4a5450337c58
font_03_sfnt_off0001426e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1426E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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