Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47ad822e59c9cc9…

MALICIOUS

PDF

102.1 KB Created: 2021-08-25 13:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 89086f8d610daae7bc8e3ff028c8247f SHA-1: b7e9f14b1f867125bf06d9235ea0dc8aa9bc8783 SHA-256: b47ad822e59c9cc986822613e052193f95d1d6712af7ccd88265872247b36cb6
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to other PDF files hosted on compromised CMS platforms, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/97mum26hh8bmovcdofnclc02lo/dajelowalodemanebafofuwo.pdf In PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/306b8a6c0bf9b8d2c853080c1aa4b671/kunigegumewax.pdfIn PDF document text
    • http://apnorajasthan.net/userfiles/file/bijimupixizuninefowuwu.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/a92c648dfbd1704bcbeabeba4ae15632/jilunovupesaxulusuxola.pdfIn PDF document text
    • https://zoomkish.com/basefile/zoomkishcom/files/61254267480.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/23090328417.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba09bd6fcea---52242914171.pdfIn PDF document text
    • http://lovesushiscv.com/uploads/files/89960411969.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/gcdeik34cdul3n2plvq0ji6783/bigikenegunisadipowipeje.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609846f670ee8---83507041287.pdfIn PDF document text
    • http://phuclocvienjsc.com/uploads/image/files/12618402098.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/aadur861rcuunqt9uejp3gnejo/tamaxofa.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/sugopabuvafixamifo.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9d89c3908---ruvowivopilukufogapofido.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a75d839802---98980191991.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/0d23e60aba5e6d692e17ee95cbd87b1b/82447100611.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/8e7d617026e63d928d813d03e3ce43e6/94623577658.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b702f8ee83f---2318019874.pdfIn PDF document text
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/subitumonewul.pdfIn PDF document text
    • http://01host.ru/userfiles/files/xusorapokagazetezi.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16111422e2e810---59377129617.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=wholesome+meal+meaningPDF 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_off00012e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1E 17188 bytes
SHA-256: d7866702bfcc7d4f1baf94b43f962ca696a3ebccc6afbdc050e02ad3f4807b92
font_01_sfnt_off00015a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A9E 10348 bytes
SHA-256: 9cdd7d39a73b77ab1e62bcd1fc4233fffd5dff47950f8aba910e426c6862f508
font_02_sfnt_off000171cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.