Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc6c28d95568f67…

MALICIOUS

PDF

83.7 KB Created: 2021-09-10 07:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 34516ce140f1bc32c98981b9e4cdd8a9 SHA-1: 65a18caac09f65bcfb4513e4ad292da76de8a088 SHA-256: 2fc6c28d95568f679b934c6fa94356ac40ca46367c31be38011a14d8d38dc43e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://festacontinua.it/public/file/17417980692.pdf In PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/8f0a8a336bbf76b996573cff1bb4b61e/30254987728.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210901_C22215CD33E9D566.pdfIn PDF document text
    • http://jeanthompson.nl/ckfinder/userfiles/files/voroferagagiborag.pdfIn PDF document text
    • https://tylbm.com/Upload/ckeditor/files/24829575623.pdfIn PDF document text
    • http://custom-mugs-factory.com/uploadfile/files/kutatadogafuzulixudovop.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/sifime.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/631cab759c9af20d1e87cf826891a714/fedidopiwojorirowuk.pdfIn PDF document text
    • http://xinchenfast.com/upload/file/rawavopox.pdfIn PDF document text
    • http://www.sname.org.tw/sname/ckfinder/userfiles/files/sisajokirugoxelufe.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/vaneruzozejajomen.pdfIn PDF document text
    • http://connectcontrol.net/files/userfiles/files/99721186944.pdfIn PDF document text
    • https://limsurdua.com/contents/files/14229422629.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/rebobuxekelufufoxexeren.pdfIn PDF document text
    • http://highspiritsmusic.com/ckfinder/userfiles/files/33856429466.pdfIn PDF document text
    • http://ultrabeauty-ff.ru/userfiles/file/vizut.pdfIn PDF document text
    • http://katour.ru/admin/ckfinder/userfiles/files/54522137087.pdfIn PDF document text
    • http://lexprikson.com/admin/style/images/userfiles/file/99633888428.pdfIn PDF document text
    • http://teewer.mn/ckfinder/userfiles/files/venegega.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/568fe9e5b6c65fae59ce7447d774876f/pemoxubekatajofegaju.pdfIn PDF document text
    • http://demirlermetal.com/resimler/files/gupimoxipesewezida.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/69620464048.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/161326e5f360ce---woferubuguw.pdfIn PDF document text
    • https://bbox.ru/images/shared/file/35694766572.pdfIn PDF document text
    • http://lmnn.ru/userfiles/file/xevakugosewodonanozerep.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=jurassic+park+123moviesPDF 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_off0000dfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD6 10880 bytes
SHA-256: 50516b38770b1fb1da8d26dd7ff21edb867d5dd969a7c9f50f3414865957f457
font_01_sfnt_off0000f92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001113f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113F 18520 bytes
SHA-256: 141f71a8abec3573fd745c0cc2056db83f7e2b5ee4b51d25287a4e67b364a8fe

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