Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce24d36a0180def7…

MALICIOUS

PDF

76.5 KB Created: 2021-09-12 17:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: eb2fe999f571015bc6ec885039991cad SHA-1: c28e510c21057a6b73b61dfcdd8e0137c8f2da86 SHA-256: ce24d36a0180def7897f9fe32ccbc888f3c12596902d4c7c6a9573816ae8b9dd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://laborke.ru/uplcv?utm_term=call+box+apk PDF link annotation
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a1a2a1fbc4---xifelebugubujexuze.pdfIn PDF document text
    • https://oreopay57.com/ckfinder/userfiles/files/lemezotamiroxufona.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/luzotesoxukazebajoxedipi.pdfIn PDF document text
    • http://mgtofubbq.com/uploads/files/84472455167.pdfIn PDF document text
    • http://vecsecity.info/editor_up/tadil.pdfIn PDF document text
    • https://www.soroptimist.be/oldsite/intranet/ckeditor/ckfinder/userfiles/images/files/teneguwusatix.pdfIn PDF document text
    • http://104408017.linker.tw/files/kevopuwaxuv.pdfIn PDF document text
    • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/sipufetagus.pdfIn PDF document text
    • https://www.greenlakecruises.com/ckfinder/userfiles/files/fulosotagutigazepomozokab.pdfIn PDF document text
    • http://studiodispirito.it/userfiles/file/64323840321.pdfIn PDF document text
    • http://chaodontuonglai.vn/uploads/ck_upload/files/gejiseboxadopebavegoruzo.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/a0dd0d0623e814f5f3affa3e26e1b0ba/nudedawatopobaba.pdfIn PDF document text
    • http://mayinmaunhat.com/upload/files/84175393151.pdfIn PDF document text
    • http://bodybybodyology.com/ckfinder/userfiles/files/pomoxiwun.pdfIn PDF document text
    • https://duragloss.pl/userfiles/file/66761387557.pdfIn PDF document text
    • http://vanguardhungary.hu/userfiles/file/56522177974.pdfIn PDF document text
    • https://rawoctane.com/uploads/file/56202749525.pdfIn PDF document text
    • http://kayapalinakliyat.net/file/pesizi.pdfIn PDF document text
    • http://konstruktor33.ru/app/webroot/files/files/dosopujonu.pdfIn PDF document text
    • http://hujiangsy.com/upload/files/70576459418.pdfIn PDF document text
    • http://hftyby.com/upload_fck/file/2021-9-10/20210910050600325019.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/rikasokiwepadakipoxonem.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/89413237780.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_off0000c94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94A 17248 bytes
SHA-256: d79013d55cda0e7890581221cd9164927b818891f5651b2ec4445efa6fc60056
font_01_sfnt_off0000f694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF694 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 9916 bytes
SHA-256: e469c7650d7895573efe7da47873f11e3bf8afa168bbfa321765c24321bc1c89

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