Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5984e7172a4014…

MALICIOUS

PDF

81.8 KB Created: 2021-09-12 10:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 57a6836912dca007b9ffdf6222970228 SHA-1: b4b86e2740b97093c6134fc2da86edfb68881ec6 SHA-256: be5984e7172a40141597c2b4267a02cc98753a8c0d53e3c838c1168deeda1887
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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
  • 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://irlanc.ru/uplcv?utm_term=avatar+the+search+part+1+pdf PDF link annotation
    • https://newdesert.pl/userfiles/file/73406823097.pdfIn PDF document text
    • http://thepokewave.com/uploads/files/42695952018.pdfIn PDF document text
    • http://showpalmedical.com/userfiles/68174010015.pdfIn PDF document text
    • https://alirezamirmohammadi.com/images/upload/files/wanenoniwewinudosedobolu.pdfIn PDF document text
    • https://svarovanijelinek.cz/ckfinder/userfiles/files/supuguzusazov.pdfIn PDF document text
    • https://holcom-solar.com/webroot/img/files/venotawu.pdfIn PDF document text
    • https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/57830485807.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/7097595313.pdfIn PDF document text
    • http://achwvs.love-mrt.com/upload/files/12461619896.pdfIn PDF document text
    • http://www.first-classlogistics.com/image/upload/File/xinorozuje.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/46b6e9149c0b0a41876ac1e24d2682e3/parodezuvorexezidani.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130b25c99a8e---34052961218.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c47f96c1d5---40279380647.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/jamakebukefamibewaba.pdfIn PDF document text
    • http://windmill-bv.com/userfiles/files/fepaweladalokupowa.pdfIn PDF document text
    • https://ibliberia.com/ckfinder/userfiles/files/nirelesedobixosi.pdfIn PDF document text
    • http://modulobase.com/userfiles/file/7855362769.pdfIn PDF document text
    • http://orikon.net/Images_upload/files/89340136339.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/gulexir.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4df7a08ca---21714606181.pdfIn PDF document text
    • http://ukrainski-rosyjski.pl/userfiles/file/mobusimi.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-9-2/20210902030854475731.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/merevivexinogisino.pdfIn PDF document text
    • http://wxmx.cn/upload/ckimg/files/202109021626035882.pdfIn PDF document text
    • http://cp-1.ru/userfiles/files/lojevirukikipu.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_off0000dc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF426 17656 bytes
SHA-256: 8c54ff37f4cfd24756107a42485ce88532737b9f5298361132fdd3ff6a21d11d
font_02_sfnt_off000121d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D7 10452 bytes
SHA-256: 168aaf99e02bc283bdd218b14ea44882084e9e4dc0a9da435c19116053bd08b2