Malicious PDF — malware analysis report

Static analysis result for SHA-256 3387e361484c2cf5…

MALICIOUS

PDF

70.4 KB Created: 2021-03-04 01:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a64f7713b6fca1fc21cc07f3860b1e76 SHA-1: d6a6a4d3e7e58121631b5304b82ba7553a3b633b SHA-256: 3387e361484c2cf533c25ad67b042810b296356bba4d3d732f745053536b4145
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://bologen.ru/award?keyword=how+to+prepare+for+maths+interview PDF link annotation
    • http://natur-bio.space/34554512277hbkoa.pdfIn PDF document text
    • https://cdn.sqhk.co/wufotubi/cT09eu4/rifewede.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445739/normal_60110c0f02309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_603b48048ae38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412378/normal_60304ce9901fa.pdfIn PDF document text
    • https://cdn.sqhk.co/zolilobup/UgegfMR/nikegawiw.pdfIn PDF document text
    • https://cdn.sqhk.co/sotatixorawi/gjygebw/download_thunder_assault_galaxy_hunting_mod_apk_revdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_5fda95af24570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445742/normal_60359563b2787.pdfIn PDF document text
    • https://cdn.sqhk.co/vavusiwi/k9hija1/bass_pro_shop_black_friday_sale_2019_ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413469/normal_5ff66891beb00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480886/normal_603b985a61e11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365586/normal_5ff8979cd35e1.pdfIn PDF document text
    • http://uscreditcheck.info/zones_of_regulation_strategies_for_each_zoned9hxf.pdfIn PDF document text
    • http://investmag.org/how_many_ragas_in_indian_musick6kgp.pdfIn PDF document text
    • http://bisipatelaloguj.66ghz.com/tabela_periodica_exercicios.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/jhjdhd6/riwugabepefepeniterub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kobuxeniduf.rf.gd/fast_tap_auto_clicker_apk.pdfIn PDF document text
    • http://koraxirimaxodet.epizy.com/93259448414.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_off0000d6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AB 5220 bytes
SHA-256: b771de700f6e268efdcd5abca09e51e75f203dfa80567e2d4be8a392f39d9374
font_01_sfnt_off0000e85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85D 10684 bytes
SHA-256: 22e8acb3b55da7f0d9279ed43b094e31b74c69e2e19df1002e2802e4267c189c