Malicious PDF — malware analysis report

Static analysis result for SHA-256 977e21fcfbac6d2d…

MALICIOUS

PDF

77.3 KB Created: 2021-02-18 00:01:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2d5064a8a8c7199c76135e45f2c1722b SHA-1: a3758a86b68b068ea37d9ebbcc98c8e10a8fb0b6 SHA-256: 977e21fcfbac6d2d9c08a63e8b9d37a3aa5b17ccedc3ac773154c0e010a2cdf5
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/123?utm_term=omb+a-11+object+class+codes PDF link annotation
    • http://organicsss.space/18305624015j2mhe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480579/normal_5fe70a4382552.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447497/normal_5fc84313506c3.pdfIn PDF document text
    • http://bazazodagipaju.22web.org/gatotkaca_in_depth_guide.pdfIn PDF document text
    • http://vemololuwejab.iblogger.org/bus_conductor_online_form_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_600c4a5fd49a3.pdfIn PDF document text
    • http://bifakibebus.iblogger.org/slumbering_weald_guide.pdfIn PDF document text
    • http://max-lifting.store/larikezururuvalnd3n7.pdfIn PDF document text
    • http://gelchlen.fun/villagers_and_heroes_android_gameplay0t6yb.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/jzjbigd/segesububuduloniwivelo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490930/normal_5fd98149eafe4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5fef4253cd46e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5fd267be9f363.pdfIn PDF document text
    • http://creditscorehelp.info/comparative_income_statement_template_excelyqlpj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mowigefugitixa.epizy.com/naruto_battle_arena_2_apk.pdfIn PDF document text
    • http://jikibepedoroto.epizy.com/dokoxibipaxifatuvamaziked.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/merry_christmas_everyone_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/addition_and_subtraction_facts_to_20.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_off0000f15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15A 5316 bytes
SHA-256: a17a16548180f6fa333afac081872ab4bb8aff5ebc93e0835eaafdfeafe6cde9
font_01_sfnt_off00010362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10362 10432 bytes
SHA-256: fa247a6a706c2fb7bf62109b0692723b2a77f34e5442270e8f5db1ae59ad9aa1