Malicious PDF — malware analysis report

Static analysis result for SHA-256 e600325680715208…

MALICIOUS

PDF

76.4 KB Created: 2021-09-18 11:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0c627ac17d6a3bc0912db4423b3b92d8 SHA-1: 48590cf2569f7deeba0cf3da405017202246d747 SHA-256: e60032568071520873c1b76287d79fe05877848080cd61011cae7c6f502d98ac
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crysiq.ru/uplcv?utm_term=best+mobile+phone+deals+black+friday PDF link annotation
    • https://www.willmarareachamber.com/ckfinder/userfiles/files/getodirumugekup.pdfIn PDF document text
    • http://theonejsc.com/userfiles/file/13440166716.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1613805ba6e538---mitujog.pdfIn PDF document text
    • http://ajmason.com/admin/ckfinder/userfiles/files/39177309185.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/15085587231.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16138db980cf2d---dedajow.pdfIn PDF document text
    • http://ashole.hu/UserFiles/File/razuzunibutat.pdfIn PDF document text
    • https://www.profiemg.cz/upload/ck/files/xapanolelozesokegipem.pdfIn PDF document text
    • http://www.fuchingrading.com/upload/file/kazubitalavu.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/terisifipetota.pdfIn PDF document text
    • http://haithuanphat.com/uploads/files/45636685478.pdfIn PDF document text
    • https://karlschool.org/uploads/files/202109101730037398.pdfIn PDF document text
    • http://kechengchem.com/upload/files/94716117001.pdfIn PDF document text
    • https://mandarinkinesiska.com/userfiles/file/bosizi.pdfIn PDF document text
    • http://hzaidele.com/images/upload/File/77056242890.pdfIn PDF document text
    • http://tidomusica.com/uploads/files/202109120404126680.pdfIn PDF document text
    • https://peusch.lu/userfiles/files/41185376901.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/27575199007.pdfIn PDF document text
    • http://balmybnb.com/t/tutorfirm/uploads/ck/files/nevifajawitoxezig.pdfIn PDF document text
    • https://rwd1.thadv.com/upload/files/33977166507.pdfIn PDF document text
    • http://www.bc-arman.kz/ckfinder/userfiles/files/vijitafawi.pdfIn PDF document text
    • http://celesteandtorsten.wedding/images/file/tojafepawasexa.pdfIn PDF document text
    • http://chuanghuilaw.com/filespath/files/20210907205113.pdfIn PDF document text
    • http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/35323020283.pdfIn PDF document text
    • http://kiuanai.com/userfiles/file/jijuzikavuzugodo.pdfIn PDF document text
    • http://steelfurniturecn.com/d/files/medozorebodi.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_off0000c5ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EC 11284 bytes
SHA-256: 96af8c80dae0bbc0e5dbeec0c2a028d0f12c3c83af154527df2a4f928c0c079d
font_01_sfnt_off0000e009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE009 16892 bytes
SHA-256: 6c460891afb36c0cac1bfacd7fc2cef009e3590a02e01deef9404f57d0809b98
font_02_sfnt_off00010b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1