Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53f7bb43a194c84…

MALICIOUS

PDF

74.2 KB Created: 2021-02-26 19:21:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6c0279b6ae3276043163eb79faf52f73 SHA-1: c91c2ce632b248b88ac8846a1070d621b48572b9 SHA-256: b53f7bb43a194c84e8f22b8264c8709d09da6e9d2e8a51d1fcffe4f2bbea7435
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://dugedepap.ru/123?utm_term=krav+maga+techniques PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391954/normal_5ff6391664f3e.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/datijuzig.pdfIn PDF document text
    • http://kihepc.xyz/348074627446wbc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379605/normal_5ff42938043a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449992/normal_6011ed2e6d52d.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/65390647798.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486060/normal_6006f7de1a600.pdfIn PDF document text
    • http://kikaxefe.22web.org/bcps_study_guide.pdfIn PDF document text
    • http://poradoit2.site/xenowurd542a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidijujaz.epizy.com/jujubiripekidewexovadoxof.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/mcat_full_length_practice_test_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/relationship_between_gdp_per_capita_and_standard_of_living.pdfIn PDF document text
    • http://jigojokupabulo.epizy.com/how_long_can_police_detain_you_without_evidence.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/57894856845.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/13645027638.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_off0000e6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 5336 bytes
SHA-256: 885f6f4e9cf07bb6b499adebc265223011c9fb26e429b31703c460efc079c552
font_01_sfnt_off0000f8a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A9 10360 bytes
SHA-256: c9a5b01a25daff96cdaf7535e9f3fdab44de1238696c606a05826a9098c45db1