Malicious PDF — malware analysis report

Static analysis result for SHA-256 010edd0eb1743dc6…

MALICIOUS

PDF

78.1 KB Created: 2021-07-13 16:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0e6f13fc2e8c2dedd5167d054f0fcd1a SHA-1: 210a90d7afbbd06ba79324372a7460e0a3df3bf6 SHA-256: 010edd0eb1743dc6cd97ee3311acd689d4a8bf9d261ed70127434984801914c2
124 Risk Score

Malware Insights

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

The file is identified as a PDF containing a link farm, with multiple URLs pointing to compromised WordPress sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely to lure users to phishing pages or download further malware. The document body is heavily obfuscated and unreadable, providing no direct content clues.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4580

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://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/d5i5s8ojrbf1lsvtk6lc38a2q6/fagaluganuvidakosiwotutov.pdf In PDF document text
    • https://abugfreemind.com/userfiles/file/kodedulevamebid.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a3835f40a10---38737320327.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c774e52bb53---dutimawidurirulekax.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609534df5d9b7---vojivozesivedoxafosil.pdfIn PDF document text
    • http://ezstreetautosales.com/clients/876244/File/zeteravag.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/6a8273d93e4eadadea335558913c4a7e/mufigekigeled.pdfIn PDF document text
    • http://bociany.sk/media/file/43624713150.pdfIn PDF document text
    • http://cowmoo.org/ckfinder/userfiles/files/xijero.pdfIn PDF document text
    • https://kund-in.com/userfiles/file/virudupakozopogixilataw.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/v5npisjmpo3ehcjojpiiouipmc/96771866918.pdfIn PDF document text
    • http://boothbayharborshipyard.com/userfiles/file/wegaretewawemu.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3768eb384---68475609465.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a68089870ec---47145927663.pdfIn PDF document text
    • http://sushimura1.com/uploads/files/63756796130.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/cb94155b47a09540ad086bf373295944/wavepemumebarot.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/c0992540f8cfb792ac29ecf0d9e32112/poxuromimeduwovasi.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c69f6248f34---57223085216.pdfIn PDF document text
    • http://suapaiatuipelehakefamily.com/clients/80707/File/zanukopumagezomexokose.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/85423815552.pdfIn PDF document text
    • http://drentmedischadvies.nl/uploads/files/57241028741.pdfIn PDF document text
    • http://erdbau-rauch.at/sugufosijutode.pdfIn PDF document text
    • http://muszempilla.com/files/file/lezim.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f540f70918---12692176778.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/5901732504.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=somewhere+to+disappear+alec+sothPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF92 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000107a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A9 10836 bytes
SHA-256: b8adaf6c610ee4a9065fb7a9d6dc246627d3209de8bc6d8884d2ecc4c1647da0