Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ee06e04d508a90…

MALICIOUS

PDF

76.5 KB Created: 2021-09-03 23:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 3a181cc3730f7825f46b079d3480f866 SHA-1: 24d0f8f3f541e233d8ff83a68828b156c8a92ca8 SHA-256: 01ee06e04d508a902ce3497e47a9a0df30e4c79478440f508ca052a4cc08ed8f
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://anandtouristcorporation.com/uploads/67154443923.pdf In PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16078b750e1104---punilupem.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c649aa97d---48750986608.pdfIn PDF document text
    • http://kinel-hunter.ru/upfiles/file/19908243699.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/35545533362.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/rqbgkqc2jlvb264t7apn2d2llu/95126411243.pdfIn PDF document text
    • http://allasclub.com/campannas/file/jikegoles.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/9347133786.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/563de90735f4ff0c8decdcff29a9bc46/xanobujigutopuzoniba.pdfIn PDF document text
    • http://euro520.net/userfiles/file/1630573222311428173.pdfIn PDF document text
    • https://campermagazine.tv/public/file/kizulafefaf.pdfIn PDF document text
    • https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/mepudiripokuwodinaz.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/86176064251.pdfIn PDF document text
    • http://seibyou-koujien.com/files/files/61131167512.pdfIn PDF document text
    • http://friulanapanini.com/images/file/fojorixararurizima.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/2b5c670af33e882ccd44d4fecc9ed09a/8809143686.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/c16bb8b57a3fa067abdaa3c5a4a42018/zaxufumazaxuzak.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/24212041519.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/oui2fu22csj8iaafevlvqr3337/dobetamajaluzugix.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/80944044744.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/8ba0979114c6dd11877949e1e4564e92/xiboxa.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/6dc687a6e78cf64c6086c249f24c18e4/83884102018.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/wovipulenuzuripib.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=parts+of+a+plant+and+its+functions+worksheetPDF 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_off0000c9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C1 10996 bytes
SHA-256: ee879fc7b08325d9b046dcf87424ca4ffe6b7966659acce9a1120016b2eeddca
font_01_sfnt_off0000e350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE350 16268 bytes
SHA-256: 7da21747313397a59ebfd21e8af83afdd42ad6fd7d313f613f606555ad49420c
font_02_sfnt_off00010d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1