Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8adddec3a469b2…

MALICIOUS

PDF

72.6 KB Created: 2021-07-28 00:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b268209c2bc235c9a63687bf15976313 SHA-1: d511692a002de3faee96421c15894d5fb1f674e6 SHA-256: 6f8adddec3a469b212a439a0cf7cc361c53f6a8c4e59e6e03ff9b83e6a09842c
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It contains a large number of embedded URLs, many pointing to compromised websites, suggesting a link farm designed to lure users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues about its intent beyond what the heuristics suggest.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9311

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://www.zywawiara.pl/pliki/15167692136.pdf In PDF document text
    • http://metafelix.it/userfiles/files/mirenavos.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e061d6e7a---merajele.pdfIn PDF document text
    • http://davisfolk.net/clients/1/1f/1f1070e31f35868a9a13f38ee7dc887f/File/putivezoxorevazolozaxo.pdfIn PDF document text
    • https://alutat.com/data/file/bitiwegizawazunikanadeze.pdfIn PDF document text
    • http://namthangbasaltstone.com/uploads/image/files/11614180560.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/e43c22a886de6c9036b723eef3cf1a79/pusojazod.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/d18ad44c96ce0272bacf1ced64dbfe80/ferurovomidezavidi.pdfIn PDF document text
    • http://accomplishtheimpossible.com/userfiles_ati/file/mokawinajis.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16094becf01a19---duturomo.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/rudowejesonajudumilob.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/peserukapuwilak.pdfIn PDF document text
    • http://pmteventures.com/clients/5/57/576e8e71b788aac95a268099fab76a3d/File/totimexesudi.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d95fca0fc5b286788032e8eb6141a447/fiwamefog.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b79e7398bf---49767979931.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/j9m29bgr3qu5lmecnv3mcjkegn/47559783052.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ffe15a10540---fifukaripafifunukejim.pdfIn PDF document text
    • http://sochi-vitrazhi.ru/ckfinder/userfiles/files/pobub.pdfIn PDF document text
    • https://otoform.com/upload/ckfinder/files/12009249961.pdfIn PDF document text
    • https://weddingitaly.jp/images/file/kelawivatiw.pdfIn PDF document text
    • http://olympicburger1988.com/uploads/files/86361358927.pdfIn PDF document text
    • http://phukhoabacninh.com/images/files/49138542759.pdfIn PDF document text
    • https://marosme.ro/hirek/file/velokulojajowatedopupud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=bahubali+2+tamil+movie+download+720pPDF link annotation
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB17 17060 bytes
SHA-256: 702709c2b80e3a1a8eb9b8433ee86a0a3e858e2b6b10dfa0cb0efa851aee9789

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