Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ccca29e81e682ad…

MALICIOUS

PDF

81.3 KB Created: 2021-08-27 21:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 1dea4bf46e0ef93c48f0ad9fad1acc14 SHA-1: 2b2a898d99b71d2c439c85d54c836ee6f4f056da SHA-256: 2ccca29e81e682ad9f7b554f8d4763ed0a3fa08dfd1c4e3330ca6fe5f27dfff7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many of which point to websites hosted on compromised CMS platforms or disposable hosting, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 http://nadiadsa.org/userfiles/file/zijufobejitejelojiv.pdf In PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/6fad5bd8f429cc0292827092b5f02027/tisonarasas.pdfIn PDF document text
    • https://rajaunited.com/contents//files/tiruxuzafizudosap.pdfIn PDF document text
    • https://dailyiat.com/html_upload/file/tibadigatigidufor.pdfIn PDF document text
    • http://hopkinshigh1988.com/clients/75739/File/jokoniteriwiresimor.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/tenijujumuwenorewukin.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/zelovemixide.pdfIn PDF document text
    • http://lg-palette.com/upload/files/pedosebubufokutewo.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/688ionnkp0gtjf4s3m4iht9oq4/3338032807.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/345dq0qfvt7134o0cg3seqsbq0/21788113155.pdfIn PDF document text
    • http://siamsankyo.com/Uploads/file/86395150993.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/fa19a4cce93fee9007f828cf0b71b4bb/79029609387.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/49494295330.pdfIn PDF document text
    • http://3qlohas.com/CKEdit/upload/files/99029064353.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ea0a8c6b9---4539422776.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160f30ef26d6a8---47507084174.pdfIn PDF document text
    • http://tochalco.com/uploads/files/40909836129.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/19m4okmt5tkndk8djmbb6a0nre/75440380356.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c17e5b66a0d---38398370968.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/164d85986cf47cee46a1ad0185efa6a8/gujovovizexugepitotane.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/d8528e57e277bf32570e0423941a38c5/foxidom.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/47031363894.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=a+practical+guide+to+dragons+free+pdfPDF link annotation
    • 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_off0000d7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C2 10876 bytes
SHA-256: 2b66b24f02afb35f4d9383997a83d4723f48ed1016d77b81ec4e83d2eaaa2e80
font_01_sfnt_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000108e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E8 17928 bytes
SHA-256: 9cccf89cdae3fcd6acd453e5e4b929beddb26431ebfbd1706e11358911ab4626

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