Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a82930d1f0bbf3…

MALICIOUS

PDF

71.0 KB Created: 2021-01-31 18:45:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a36824170707602030c3ddb430c5b5a0 SHA-1: fca3db31fed6b7308a46639f99d845cd263c2dbd SHA-256: b1a82930d1f0bbf3536efa8dc244d1b20991fe7f3ca15780b2f37bbac9f5f0ae
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wb?keyword=christmas%20cake%20icing%20decoration%20ideas PDF link annotation
    • https://cdn.sqhk.co/sewenajete/dMJrZXr/stickman_falling_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/xetorexevapi/dECjbif/masha_and_the_bear_cake_topper_nz.pdfIn PDF document text
    • http://tur8osale.site/527631987675zmgo.pdfIn PDF document text
    • https://dikejupovavobu.weebly.com/uploads/1/3/1/0/131069859/notozojibes.pdfIn PDF document text
    • http://depalowivejal.iblogger.org/larsen_and_toubro_annual_report_2017.pdfIn PDF document text
    • https://fuwiposodunumof.weebly.com/uploads/1/3/1/4/131438128/0d4540f08.pdfIn PDF document text
    • https://lokudepapina.weebly.com/uploads/1/3/5/3/135325929/6592366.pdfIn PDF document text
    • https://cdn.sqhk.co/pesunexaxak/hfji9jb/zojegumelubujer.pdfIn PDF document text
    • http://pollsexpert.com/skyrock_radio_libre_2020wm5ir.pdfIn PDF document text
    • http://shtampshop.ru/namorado_de_aluguel_minhatecaec5ug.pdfIn PDF document text
    • http://summ-green.fun/introductory_statistics_10th_edition_weiss_freef5tia.pdfIn PDF document text
    • https://tefitosuwit.weebly.com/uploads/1/3/4/4/134478986/fff1611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaxidos.epizy.com/zegufepofimanabej.pdfIn PDF document text
    • http://moxododokojuke.epizy.com/40468090265.pdfIn PDF document text
    • http://pukevekoba.rf.gd/62378691826.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A6 5292 bytes
SHA-256: 74f07cee39f0d9c31cb5235ea60f59699145c0b5fbc4739e2da1ea4bd39c78ee
font_01_sfnt_off0000ea6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6A 10892 bytes
SHA-256: aaa6ecb28e543d460d3b8b769268a0dabc56c3fac76ad9c1cd96ac28989927e1