Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d707987f7cd96d…

MALICIOUS

PDF

79.7 KB Created: 2021-06-14 16:08:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e361244473a4bdc1f35d22fbbdb56da1 SHA-1: 24cdbd5a5dca2ca7983df1a338d5e6537926b7c6 SHA-256: d0d707987f7cd96dadac39d8f4a3f2550fbc87dae0940c9b5d218f01773cac22
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9606

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://pixomot.ru/uplcv?utm_term=adobe+premiere+pro+cc+2019+trial PDF link annotation
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/os1bu4eqkguuiguuicv2ckhnc3/dimurowoma.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b800cd778---72139431305.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/povedefopivozozalo.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/bcu2fm6hhdmcmvj35hiik9dm83/40317755616.pdfIn PDF document text
    • https://dollarplus98.com/images/upload/files/losudutumuwuzuwip.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/2cd3cba36304ee66d3269709e6c9e5e9/tigiwajegubo.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/41227455598.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160ae5149363ee---ribekodabo.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a01693ab0db---93674530080.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/4e122518be27aa35632141c859675966/tivozezotu.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/0c284e8f5263ec7933671bca1de01a79/mufepu.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/dlnr1hpd898dutb45nfrl3tbq4/dafijafemunutizixuf.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16086585e76af4---45045083317.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c30cd2ba11---kikewanaragaladevikikupe.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/heoja8on2t4kkcr70j9hpamep2/4218976376.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/17787637137.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086c117e1fa4---50312395092.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_off0001080d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080D 5652 bytes
SHA-256: 62b568576e8c18d98f132678cf0d251a2815b850a44168277e4b7e4b34247813
font_01_sfnt_off00011b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2B 11560 bytes
SHA-256: 2fedf2bb7b6e6c328270f29f15f91e8afe257772923088d8eb07407308de79ec

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