Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0584ef873c7ef5…

MALICIOUS

PDF

72.0 KB Created: 2021-09-25 13:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 00c963f2603b8e44e0b80f927acf1bb6 SHA-1: f147ac739d864ee695e44dcee6d40a3512a24848 SHA-256: ff0584ef873c7ef5cea9c2c83064e162b7ffb71502bd97d9ead112ebb7d88f60
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://inwebjor.ru/uplcv?utm_term=windows+8.1+activation+key+free PDF link annotation
    • http://mail.teleserviciomalaga.com/ckfinder/userfiles/files/bokuxexikuf.pdfIn PDF document text
    • http://paliukenas.lt/i/File/xujiselanowobamelagi.pdfIn PDF document text
    • https://www.bussmann-tiefbau.de/ckfinder/userfiles/files/buluwojekeru.pdfIn PDF document text
    • http://flirtproducties.nl/ckfinder/userfiles/files/32608553770.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16133536a51301---83006181722.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1613938243f713---37525766866.pdfIn PDF document text
    • http://mrpokedb.com/uploads/files/jesogele.pdfIn PDF document text
    • http://sunpix.ru/img/lib/file/91581090472.pdfIn PDF document text
    • http://gomsuhoangminh.com/app/webroot/uploads/files/82242437640.pdfIn PDF document text
    • https://businesslife.com/content/file/51700135106.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/89686068515.pdfIn PDF document text
    • http://dieutrimun.myphamkangnam.vn/webroot/img/files/37768099747.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/18179127953.pdfIn PDF document text
    • http://gaongonmaiphuong.vn/webroot/img/files/28066521933.pdfIn PDF document text
    • http://nadafashionbelt.com/Uploads/file/34580550011.pdfIn PDF document text
    • https://drticket.ir/basefile/drtiketcom/files/zubup.pdfIn PDF document text
    • http://thaimassagemodel.com/ckfinder/userfiles/files/94615508083.pdfIn PDF document text
    • https://mastirz.com/userfiles/files/95171318436.pdfIn PDF document text
    • http://namngonviet.com/user-/files/56858667801.pdfIn PDF document text
    • http://agriturismolescuderie.eu/userfiles/files/xakometozigek.pdfIn PDF document text
    • https://www.temtechnologies.fr/ckfinder/userfiles/files/31117258833.pdfIn PDF document text
    • https://xulynuocphangiathinh.vn/images/pic/file/81981986151.pdfIn PDF document text
    • http://winso.tw/userfiles/file/49659176939.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_off0000b37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB37B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB92 11100 bytes
SHA-256: cf0e645b145b1ee3cb664d6e1f8c224e89c47b65bdeb3e17a62190cc03a47cec
font_02_sfnt_off0000e5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BC 17312 bytes
SHA-256: 867e9afca7129ecd44ae19014ff8accc321b598d325cbc3cc1231af9968311e5

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