Malicious PDF — malware analysis report

Static analysis result for SHA-256 225caf5b997d1f04…

MALICIOUS

PDF

72.0 KB Created: 2021-06-09 05:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e44f979dedba2930cd395d2da1b7738e SHA-1: ffb6b75f964bd5613d3069214e4afea7d4abc5b0 SHA-256: 225caf5b997d1f04abbb4cf7725f8049f102ea2884479ebda19af64a2663da1a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is classified as malicious and contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms. The document body text, though garbled, suggests a lure related to a game search term, likely intended to trick users into visiting these malicious sites. The presence of PDF-specific heuristics and the ML classifier strongly indicate malicious intent, likely to deliver a phishing or malware payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7662

Heuristics 5

  • 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
  • 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://crewmak.ru/uplcv?utm_term=best+saiyan+build+xenoverse+2 PDF link annotation
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075768b5138d---sipobufuferujugawitaza.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/s0ede29t9c2m3pmfn5tsmp5ng2/74395780165.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/18151925884.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/r0k1gi3onbnd4hh5q86ro30com/tonasatulifuravikevezovu.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/82292914477.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/bn23os2fm18icosv3ipevbea4u/nabojiwajojudufilarebufa.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/b14bc79474b18921661d577fc3aa470d/58238215871.pdfIn PDF document text
    • https://mangonebike.com/uploads/file/vaxigaguzojavafiwuzut.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/45668786631.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608278d70fc47---sanedi.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856dfcb2860---mixabetezupovusipel.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160af055102899---papavobanaxutuwasufewi.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/14c4ac30fe4fde788a1d659e98660ce9/nafazegaxaku.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d4257552e---gaxinixevalejama.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/54954661541.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/73092265158.pdfIn PDF document text
    • http://www.climatisur.com/ckfinder/userfiles/files/volijepaso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9E 5372 bytes
SHA-256: 6dd9c67aae30cd8a550d382449d26fd81721f951c668855db21562ada148b65e
font_01_sfnt_off0000fff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF3 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620

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