Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff2eb3f1d888191…

MALICIOUS

PDF

81.3 KB Created: 2021-09-13 16:35:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: f6718250689cfa25511a3f97540c0d11 SHA-1: 43ecd52496035bfe3cce751984f06898a6cffd37 SHA-256: 1ff2eb3f1d888191b8eee220046c2b3e8d6fdfd08220659006e08b711e9866f9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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://allytemp.ru/uplcv?utm_term=how+to+print+a+pdf+document+on+mac PDF link annotation
    • http://taxilitomerice.cz/ckfinder/userfiles/files/ranopobefonazoxivamiv.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161397ecfca148---39459676728.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/jedixebu.pdfIn PDF document text
    • http://patanjali.zohukum.com/ckfinder/userfiles/files/11491905356.pdfIn PDF document text
    • https://suthuytinh.com/app/webroot/uploads/files/49630748882.pdfIn PDF document text
    • http://hoadondientu-ptp.vn/images/ckeditor/files/6904311195.pdfIn PDF document text
    • https://kattliv.com/kattliv/admin/userfiles/file/tukaji.pdfIn PDF document text
    • https://namkhoasaigon.vn/web/images/files/rutabe.pdfIn PDF document text
    • http://ambvetsanprospero.eu/userfiles/files/20108859084.pdfIn PDF document text
    • https://spotiverify.com/ci/userfiles/files/nelewamasetilom.pdfIn PDF document text
    • http://xn--989ap7r0xbd5x.com/upload/fckeditor/file/kumuxeligam.pdfIn PDF document text
    • https://kiaavcilar.com/upload/ckfinder/files/12700754738.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/524e084256536b8a16ec616df784973b/gipemaw.pdfIn PDF document text
    • https://excore.hu/ckfinder/userfiles/files/96475294916.pdfIn PDF document text
    • http://koreanhotpot.com/uploads/files/judegirofe.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/ladeg.pdfIn PDF document text
    • http://fairfresh.net/assets/admin/ckeditorimage/files/90807608034.pdfIn PDF document text
    • http://agecarekorea.com/ckupload/files/suxotag.pdfIn PDF document text
    • http://snp-ent.com/files/fckeditor/file/2436816946136904b25f77.pdfIn PDF document text
    • http://technimexvn.com/images/ckeditor/files/26730251459.pdfIn PDF document text
    • https://fanaf.org/article_ressources/file/87625205384.pdfIn PDF document text
    • http://factblogs.com/uploaded_files/userfiles/files/favipusunatelafakok.pdfIn PDF document text
    • https://anaksemut.com/contents/files/wafawujuru.pdfIn PDF document text
    • https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/86280647672.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_off0000d8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D3 10744 bytes
SHA-256: 4919eca1e303d70158c759e2080760d8633f8d211c33998bb7ace374f8bb19ac
font_02_sfnt_off00010987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10987 17456 bytes
SHA-256: 066af973d3c191adf8c325d9d76013eaa94ce2ec44ecdbbc27322975451cba10

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