Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f80554bd1fcdf1…

MALICIOUS

PDF

284.6 KB Created: 2021-06-26 05:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c8a752f70420bb9a67c9d08ca26cd407 SHA-1: 77ca70bf6489309b1ed240427127127489a3097a SHA-256: 68f80554bd1fcdf166a672e58f1ab01c23721361270d3e2e0438d320eb46444a
214 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of an advance-fee scam. It contains lures for fake invoices or parcel deliveries, directing users to interact with malicious links hosted on compromised CMS upload storage. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, but the presence of multiple links to potentially compromised WordPress sites strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099a74a79ae4---funodixeletiga.pdf
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/iius3o50p5cviavrrjj8r9v7s6/71933843669.pdf
    • https://peiitw.com/Upload/ckeditor/files/71296847341.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8bb99baf22---bevepogi.pdf
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bfbbce3a544---83178374034.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/80726d0d5d735ae55c991402ebb3b09d/65857267730.pdf
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9b738319f---77536394092.pdf
    • http://adaviestransportltd.com/userfiles/file/fogusikenuxix.pdf
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607dcd0b15a08---bexikal.pdf
    • https://eletvital.hu/uploads/files/17301890799.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b2c08eaa---20327647417.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607246bd5ab7f---zifusefujulazixim.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160aa080dd4757---nuxogogerivotutejul.pdf
    • https://aspaeng.com/files/image/files/11464103544.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856a0d11519---fevafonekagunojutifoje.pdf
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/0d7184dbd138d659c3a01259213d7e3e/wesutidereruvozika.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16098cb921ce8f---86069415854.pdf
    • https://pharma-tools.eu/galeria/file/39729493910.pdf
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/3bf5c113a09bf0394410e1be4e2a60c6/51096839965.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/e2c52mo053r06p16hju8kfei01/47034374453.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160887186a8f28---narofebuwa.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080445627c66---zowumewogaxezo.pdf
    • https://sonarmusic.hu/up_image/file/zoxiv.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=nubc+official+ub+04+data+specifications+manual
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003ff6d.bin
3634b4e5dc279bb11f3730fe70a33a7fa0ce12316a5ce88dd1e26f37141d9e85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF6D 11100 bytes
font_01_sfnt_off00041919.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41919 16792 bytes
font_02_sfnt_off0004312b.bin
a261d4479a0289e361103a64fe9856541510179657c17b35018ae4512c69dc0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4312B 18352 bytes

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