Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7c639705fc86cd…

MALICIOUS

PDF

72.3 KB Created: 2021-02-14 20:03:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 434f172baf4ea4b5f497d48744a9b4c8 SHA-1: 85db688942743028331436947131c6517f840380 SHA-256: 0a7c639705fc86cdfcf85d34f497d4c4846c7749a931e7a630d084983b4ea44a
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://leonvi.ru/aws?utm_term=alternaria+solani+en+papa+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459469/normal_5fd63f291df8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449775/normal_6002a98721964.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407331/normal_6007ef1aa2820.pdfIn PDF document text
    • https://pomorewosijimop.weebly.com/uploads/1/3/2/6/132681296/dadogobikaja-virare-tepibasesigidu.pdfIn PDF document text
    • https://nadenekaf.weebly.com/uploads/1/3/0/7/130739264/kuxeporujonot.pdfIn PDF document text
    • https://gulezawajure.weebly.com/uploads/1/3/1/8/131858287/6600338.pdfIn PDF document text
    • http://tehnotop.space/leadership_interview_questions_and_answers_samplebwf19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411252/normal_5fe1385b6739d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495838/normal_5fcfed241926c.pdfIn PDF document text
    • https://sifirugosiwoxam.weebly.com/uploads/1/3/1/3/131384024/0e1ecc52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_601ff03c56be1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365547/normal_5fe3a280f40d7.pdfIn PDF document text
    • http://lbaranaydin.com/8127358167oyc1n.pdfIn PDF document text
    • http://help-nanny.site/word_collect_level_250_answers5su13.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/kopisigapub/wrong_turn_3_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/silence_i_kill_you_achmed_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/28817124195.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/aparato_respiratorio_tortora.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_off0000dbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD0 5024 bytes
SHA-256: 1d26beb71eacf5f549da70b992345c95445af55995c479b4a7b59975fa7c2e6d
font_01_sfnt_off0000ecf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF4 12072 bytes
SHA-256: fb7d69e2891193cc40e602754fe0e6686afe8826f6480e78e279c163c69b535f