Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffc1296535ab2b5…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 21:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e64f791853ef737156ab8194a8c8a9bd SHA-1: 37aaaed9290d465ff73023057a4dbebf0aeee23d SHA-256: 3ffc1296535ab2b5d878c0090ddf23b2b2653ddc58a44b657a2a341bda8ca62f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=naza+flight+controller PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404310/normal_5fe15c52c889c.pdfIn PDF document text
    • http://keepxufi.space/621099123057n0w7.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/gizijiwubobako.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_600df7dfc5482.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450251/normal_5fdc51007c6ec.pdfIn PDF document text
    • http://detonic-ordina.website/3833033365661ap5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497071/normal_5feed21ba6d7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465935/normal_5fd34a0f240aa.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/how_long_to_put_jerky_in_dehydrator.pdfIn PDF document text
    • http://reduslim-ufficiale.website/zee_tv_serial_punar_vivah_songs_down2b7wn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_600a09f10f09c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405208/normal_5feb73b7a631d.pdfIn PDF document text
    • http://copalofa.site/medexisorirotilavgxadh.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/a_first_course_in_abstract_algebra_3rd_edition_solutions.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/saduko.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/rotivudeduxubebob.pdfIn PDF document text
    • http://servempieza.site/guitar_tab_notation_guidekpxcw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nefagolom/57340316980.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/digital_forensic_investigation_report.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_off0000e2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B6 4984 bytes
SHA-256: 5aabcb28e4e0a53805c83397885c66a3d2ff6669d6686cc8a5656db1be01dfe8
font_01_sfnt_off0000f3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B8 10408 bytes
SHA-256: a89fe044cc8ee65ebe18702d2f085eceffbc3fd469eda3251b59e51c69739f5e