Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb7c2c991134ff7…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 14:33:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e91518bfc26db73551435ad227604792 SHA-1: b7bed3dc5b4894954676e99e9c0bf63060f64860 SHA-256: 3fb7c2c991134ff7445102181e0f7ba049903a073c58559ad832a3e5f2bb1d6a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/award?keyword=how+to+pass+the+ca+dmv+vision+test PDF link annotation
    • http://yildirimotobursa.com/vorimorulumibogogi3nrim.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/what_does_pull_quotes_mean.pdfIn PDF document text
    • http://theharaka.online/punjabi_mashup_bass_boosted69qw0.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/samaloja.pdfIn PDF document text
    • http://golixudib.mypressonline.com/wikaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5fdc0fb59412f.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/my_electric_dryer_is_not_getting_hot_enough.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/84072680484.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/kisowife.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/cgiooha/sculpt_it_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/kLgj1e7/warriors_of_fate_capcom.pdfIn PDF document text
    • http://wiinorama.website/guvuvoteduguruaxk05.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/ibZhhhb/luke_bryan_love_songs_youtube.pdfIn PDF document text
    • http://jopkapopka.online/affirmative_and_negative_words_in_spanish_practice1f5k0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zutugidod.onlinewebshop.net/11237536774.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/mental_status_examination_form_free_download.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/how_to_reset_a_westinghouse_tv.pdfIn PDF document text
    • http://widifusi.myartsonline.com/83727854422.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_off0000e080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE080 5296 bytes
SHA-256: cdf6574d20f76e2ef2cd2d47c280c4cc4172056a87dd36b3dff9b18f2e7d2ae8
font_01_sfnt_off0000f278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF278 10408 bytes
SHA-256: 6b08c36282eab4e29f64de36be30dec3a51a2217f0d379a81bdb9d1f5b39cca4