Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01c89dd362cd837…

MALICIOUS

PDF

80.3 KB Created: 2021-08-15 01:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 095e2ca682f1a48a4dd12e9e0655cd26 SHA-1: f4a3698224ebf515e7241caaf6bbf6b8f93f2b25 SHA-256: c01c89dd362cd837140a9baa6bb8b964784d63926ea51c3abce88d4ace46d6d4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/ff987f26e63ce1424bf04412b78fdbba/podamexamonoja.pdf In PDF document text
    • https://bloomland.com/sites/bloomland.com/files/gejogikaregin.pdfIn PDF document text
    • http://vipforiraq.com/userfiles/files/zojetusav.pdfIn PDF document text
    • http://dytac.hk/userfiles/pojanevowipuxem.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100795e39a6c---32579186168.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f75f3f90007---8618140698.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bf4b3af88---kapojupabusasudifelasi.pdfIn PDF document text
    • http://cn-biyoute.com/d/files/lenenixemexovumi.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c94cac8c829---widamupadibi.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/selupesabifazoruguza.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d78a3edee53---48149708326.pdfIn PDF document text
    • http://www.pvvc.cz/files/nozolafitugutas.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc70dbe229d---31147905619.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d836e42a0f---puzidew.pdfIn PDF document text
    • http://smartcevent.com/clients/871459/File/dobujukivibodobom.pdfIn PDF document text
    • https://unicon-msk.ru/data/files/66706989178.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079b9e0928d0---wiriwukudup.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/pavum.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c19bc4cb629---78841637241.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/vexumelamagawidaxore.pdfIn PDF document text
    • http://asfus.net/virgsurv/userfiles/file/jalukigiwufen.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/pamumoxekedudarebozezoxo.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/xujovuzefilixajejoj.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/qlqstsgve3c8cua76r0nd4tugv/firanuzuna.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=minecraft+silah+modu+nas%C4%B1l+y%C3%BCklenir+telefonaPDF 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_off0000d35c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35C 11280 bytes
SHA-256: d2210038c58676d9025d78324d0c58456405231444728deddb661e061d2f56ca
font_01_sfnt_off0000ed50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED50 18136 bytes
SHA-256: 0062ab778257231bf6b3905a0861e77aee2ec50630d62fb426c986014d29b718
font_02_sfnt_off000118f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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