Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff0aa220f1fbb95…

MALICIOUS

PDF

82.8 KB Created: 2021-08-10 15:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 98ef89ec2fd567cdf42a3fb8edba5e65 SHA-1: f75e9b44e8d27413333decf41fdb6dd793af03a5 SHA-256: 7ff0aa220f1fbb95464afe74481140eeb55234c0db9eba7782ca9fab79c1f765
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves luring users to external sites via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/a04bd4a4f6034c786a145641aa67d3bb/petubaxujuvorefezutitesid.pdf In PDF document text
    • http://luluscafeonline.com/uploads/files/68317327660.pdfIn PDF document text
    • http://jhsclassof63.com/clients/c/c8/c8cc7cee7579ddcd469b669c0eb172d8/File/rowamowa.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf23de1f45---sojadupanomewuso.pdfIn PDF document text
    • http://katachizu.com/img/news/files/19244674064.pdfIn PDF document text
    • http://finchamauto.com/pics/71245769237.pdfIn PDF document text
    • http://vidol.nl/userfiles/file/tekexirobipu.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/af4cccb580ada054a6e1e9614b817f2b/rabexomefusetugo.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/4cb24438372ef1e877f702f71a05e5f9/lirukiwatufozukuriluk.pdfIn PDF document text
    • http://sergey-yushkov.com/pict/file/namuramutukafefedujaf.pdfIn PDF document text
    • https://cfbadalona.net/ckdata/files/39508604449.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160aafa3f94033---dizobutibupivazatidakoda.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae25b09b0c---zefipixavenumomovaviwene.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/98660274394.pdfIn PDF document text
    • http://flynewsletter.com/uploads/file/95436171565.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/259ef30d039b5f7f4a7c72641f0c0ad5/2657554190.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c47f688a98---29462088162.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/zatagetefikijajafitizudib.pdfIn PDF document text
    • http://centromedicoveterinarioadda.com/userfiles/files/40164370639.pdfIn PDF document text
    • http://studiovalecchi.it/userfiles/files/47512956633.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072652f502e4---rarogi.pdfIn PDF document text
    • http://xiangzhuan.tw/upload/files/pisajapogoxemo.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c218c472c23---75170648718.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddd6eb34a17---76093020227.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=benim+hocam+2018+kpss+t%C3%BCrk%C3%A7e+video+ders+notlar%C4%B1+pdfPDF 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_off0000d892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD892 12032 bytes
SHA-256: e056cb5863e368c3997f386c906d6651c4e74280c23748cdf59f4ef10ed8870a
font_01_sfnt_off0000f50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1C 18020 bytes
SHA-256: 0027f61093a14d1038d8339ff136e7574ea684dfc2585be6487c9e11efdcebb2

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