Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d60c19fa5a5cde…

MALICIOUS

PDF

77.1 KB Created: 2021-07-08 13:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7005659c1ff983d8c18d0eb24850f762 SHA-1: 35ba7664d4d2e29455bb237241e621c7442cddf9 SHA-256: 07d60c19fa5a5cde056eeaab1ede493a477948a8790e038e3bbdb98508535d56
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised websites and disposable hosting domains. The embedded URLs suggest an attempt to distribute further malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sahrugs.com/userfiles/file/45402306351.pdf In PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160833b9a24a5c---25685828784.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/32ac7971629ecccbda0b3c92307d298c/fikitagil.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/16075a98855585---51513022078.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab9ba0af05---4908986995.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086db8378044---xabumevetom.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070d8b884214---wazagawodetovev.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/3774eee5e1d3c7dddf83ac70dd6acbf2/43857760315.pdfIn PDF document text
    • http://naucseto.cz/storage/vurefe.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097633b01de8---86231346511.pdfIn PDF document text
    • http://cokhixnktientien.com/Images_upload/files/40467213007.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/08r5tba92fjr7osknvl1t6fbqh/ronomewik.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/a730a7dc998262777b45060ffa895a7d/27938543742.pdfIn PDF document text
    • http://mistralizmiryonetim.com/uploads/file/zogakizawojidixagututamo.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0f1b46ce9---65148624807.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/k5csovdvdvnhu5iuf6gc2sorc3/73515147134.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160ba12e6b617f---gonibazemifufuwa.pdfIn PDF document text
    • http://dansensvenner.dk/imagesfile///23011854605.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/b6e7c5acf9ed897bb617f8a04d0cdbab/tanifepufixemereti.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/57859133386.pdfIn PDF document text
    • https://aiwatopup.com/ckfinder/userfiles/files/kateres.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=exploring+science+9+answersPDF 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_off0000c96e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96E 17124 bytes
SHA-256: c2930d8ab2073de66f9b1290c46d3633ef2f34d40e3e40aa3bcd65427c7f7ae7
font_01_sfnt_off0000f639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF639 10788 bytes
SHA-256: a5f35c3fb1d08f36362d5875ac771ecfdd8c2c856d98662f7fbd559f295facde
font_02_sfnt_off00010f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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