Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab49cb8ddf7431e…

MALICIOUS

PDF

80.5 KB Created: 2021-08-15 00:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3faed17841d5e944173dc29f58c6558c SHA-1: 9fed6690cc880ddbf2c6ce1c2cd077197e0acb50 SHA-256: 6ab49cb8ddf7431e35b3779c77696d62731ec6a656b073103bb48427750ae203
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm pointing to various PDF files hosted on potentially compromised websites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the structure and URL patterns are consistent with PDF-based phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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://jshtextile.com/UserFiles/file///90583260094.pdf In PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/xobigonubaguvoroxemamo.pdfIn PDF document text
    • http://cadeco.com/testingsites/advantage_aviation/assets/media/file/11685306173.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/48298729835.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/setatarisu.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/b251557cd65bbffb14bd49d02479e98f/bojezezorisajujapuwefar.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/97312367686.pdfIn PDF document text
    • https://rajatotogroup3.com/contents//files/94882975779.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210507185326195.pdfIn PDF document text
    • http://emeat.ru/var/files/15630379345.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/sonoxezedivukalabokined.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9efb4c9746---59279327487.pdfIn PDF document text
    • http://sportsclinicwest.ie/media/contents/file/rabiwugada.pdfIn PDF document text
    • https://bank-kredit.at/ckfinder/userfiles/files/81589181489.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608c35249dd30---23171505565.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/48141767419.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160793fd413b48---misosabagimabusatupo.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/98789693576.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/67256017927.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608816b7645af---70541008185.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16250757513548.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/b03bf4fb54a8f94d01a5c926bc8fc8bf/nidowogaxuwobipegewawul.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/1703427ce0e452a7afe45a1564e3102e/20011176763.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=euro+truck+simulator+2+bus+game+download+for+androidPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCC 17024 bytes
SHA-256: 90e524271a705d7cf942c0bb9c41c5c39d40c7ede2f79e20c265213bb42f46bf
font_01_sfnt_off0000f8fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FA 11340 bytes
SHA-256: 6ad6c555cd5342969e71f94ab7d08042cbb2abbc9f89c82d27311461e0269767
font_02_sfnt_off0001139b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1139B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA8 1700 bytes
SHA-256: 15171638d69c9281a983de8a04f8d213e5ed86d33053034f6aa0dd130c4010d8

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