Malicious PDF — malware analysis report

Static analysis result for SHA-256 9959499229431f52…

MALICIOUS

PDF

74.4 KB Created: 2021-02-05 10:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 899573d5e305cc6ef86bb2906b02a7ef SHA-1: c9151d5abc09c8d57a8f0390da8ee5fb2ab9950c SHA-256: 9959499229431f52939b66c16421b85a3a5a15c0819fa46aed9df97444d858ab
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=first%20line%20manager%20interview%20questions%20and%20answers PDF link annotation
    • https://joripirido.weebly.com/uploads/1/3/0/7/130776040/wiresob.pdfIn PDF document text
    • https://pozuxona.weebly.com/uploads/1/3/1/3/131398461/fuvos-rikifonofor-xoxirev.pdfIn PDF document text
    • http://naturaleone.space/janorofi26c2j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426972/normal_6010b649a6d3c.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/xizalulokelevexevufe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412173/normal_5ff7ff3d36fe6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376599/normal_6007f0b5ee925.pdfIn PDF document text
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/levaduvudi_sobokegevivo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386837/normal_6019f0be00723.pdfIn PDF document text
    • http://kopumiwabetare.66ghz.com/xowevud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bapinusajix.rf.gd/38509615003.pdfIn PDF document text
    • http://viporikapopafep.epizy.com/tofakunixo.pdfIn PDF document text
    • http://tokavasetalan.epizy.com/counting_stars_piano_free_sheet_music.pdfIn PDF document text
    • http://sufapanizesemot.epizy.com/donation_letter_template_for_tax_purposes.pdfIn PDF document text
    • http://gonoxil.rf.gd/guided_by_voices_live_from_austin.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_off0000e60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60F 5380 bytes
SHA-256: 40c87bac8c30e0229c368933ac50cb58782c4500403fd3ba9c2923de4af39a5b
font_01_sfnt_off0000f84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84D 10668 bytes
SHA-256: 3b02b95b214a76a3251da8830893ee008bc0c8d351aba7a74a128fc771caeed3