Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b8051555e7662f…

MALICIOUS

PDF

1003.8 KB Created: 2021-06-10 23:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f07192b7cad06ef1d9fa931781627b4a SHA-1: 02ae446597dad25179789a39d11327b1549ab0ba SHA-256: 49b8051555e7662f1d766fe4c89962db657c4a97bf272b8158a7430a8ee65cb2
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.0918

Heuristics 4

  • 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.
  • 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://crysiq.ru/uplcv?utm_term=sedra+smith+7th+edition+pdf PDF link annotation
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1d2a1ff44---buseziror.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/9iita41efvqn9k84ghuqoe4d1q/jelazaradebesef.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/lopaxagorezugodarakomorus.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/27mtsdadp34sr9re0doq9le9l4/42223855897.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ace3b98f209---46093613135.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/03g3gvvigltrl2cu40oso6uu7d/womadajunapakote.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/5u5tslupt347a7cni4emjvlcvs/69827931191.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4c678e6e1---92737896775.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/wodudogunav.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/ov4cbi26fl6r0lurr1is514lpk/jegewasimul.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824d455326a---kitovo.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/9p35t4uhu3ototlo0dss9k202p/koniwadezimapiwiras.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/g0m8dcr3q346m6ttueu4s463u0/93483551115.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bac4e238f82---pujamatitovipariderizor.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/2721270102a8c57747dbc92cbc67a902/velujajomimupomun.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/47187948024.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn 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_off000f8932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8932 5432 bytes
SHA-256: b855192c6eeff0e2951c70f344a5e59a3fdcbff65f3baa56f01e760d5f804617

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