Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f4c77a52bab31d…

MALICIOUS

PDF

71.5 KB Created: 2021-09-18 06:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: ab6ac3a720373c7f75a17c132adf72f4 SHA-1: 48f075c50efe26b6f4d44c7c08ae4bb8bd26f251 SHA-256: 60f4c77a52bab31d8bf467194bd16580412f486720482357041de5fb1c2d6613
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains numerous embedded URLs that form a link farm, with many pointing to compromised WordPress upload directories or disposable hosting. The primary purpose appears to be directing users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://wastran.ru/uplcv?utm_term=grand+city+thug+crime+gangster+mod+apk+unlimited+money PDF link annotation
    • http://wpscrm.in/uploaded_files/userfiles/files/16135236418.pdfIn PDF document text
    • http://munnarteabungalows.com/userfiles/file/55141557456.pdfIn PDF document text
    • https://quangcaowebsite.vn/uploads/files/kijopojuj.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139a43cc522f---69590121748.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.org/upload/files/loruxeleronowewozural.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/50619571504.pdfIn PDF document text
    • https://istanajpdua.com/contents/files/todogexodanerefulo.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/bodinaxabijulutapuz.pdfIn PDF document text
    • https://literie-depot.fr/UserFiles/file/nijumalugozobi.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/8fb2c2205e286ce5a944ab4da0ba8e3f/65531557614.pdfIn PDF document text
    • https://argekaucuk.com/nbg/upload/files/sufagazigufasaluxisur.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/bosiso.pdfIn PDF document text
    • https://bodymart.in/ckfinder/userfiles/files/ximokesikerad.pdfIn PDF document text
    • https://leganordavigliana.com/uploads/file/8222929824.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613caa89a6c81---88783735027.pdfIn PDF document text
    • https://demo.wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/52459335029.pdfIn PDF document text
    • http://ps-chiptuning.hu/userfiles/files/lerudara.pdfIn PDF document text
    • http://marleenjansen.nl/images/uploadfiles/vivusuwoxudejij.pdfIn PDF document text
    • http://hiro-seiko.com/upload/files/77479996565.pdfIn PDF document text
    • http://newcityhk.com/userfiles/vuwikedolo.pdfIn PDF document text
    • http://marisqueandopremios.com/campannas/file/zamenij.pdfIn PDF document text
    • http://taxplus.in/images/contentimages/files/lidojakad.pdfIn PDF document text
    • http://tryinvest.eu/userfiles/files/25149574084.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/pumolazajarifu.pdfIn PDF document text
    • https://intrigantka.ru/images/userfiles/file/96643994890.pdfIn PDF document text
    • 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_off0000b628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB628 15344 bytes
SHA-256: 31c9acb871e550171e68e9277d7c6ef778552f3f6978e88cbf5d1562a2f706d2
font_01_sfnt_off0000dd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2E 11304 bytes
SHA-256: af5dfb9dd7c75da76f306898229c518b26cc4113e9a0b69ca472f6fd521ad5cb
font_02_sfnt_off0000f763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF763 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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