Malicious PDF — malware analysis report

Static analysis result for SHA-256 780bf13d777ce2c5…

MALICIOUS

PDF

66.1 KB Created: 2021-02-24 19:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bf813970ed60f7988ca4c1774a1a2579 SHA-1: ac30e5cb4fb2ee454f5b5a49dc49e625ef6024b8 SHA-256: 780bf13d777ce2c5d328327254d696fe817952ea759030eaaf61c01e584c18c5
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://leonvi.ru/123?utm_term=what+ink+does+hp+officejet+4635+use PDF link annotation
    • http://all-system7.work/everstart_maxx_k05_instructionsxyux7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446030/normal_6034c1f8a74dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448124/normal_60291a0b5e68f.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/noxonakinugonej.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/why_does_jocasta_kill_herself_in_oedipus_rex.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/23325316516.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/5564971060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474752/normal_5fe9c4e9b0f38.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/lotibabakuj/android_bottom_navigation_text_not_showing.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/london_travel_guide.pdfIn PDF document text
    • http://livirava.atwebpages.com/is_a_2012_hyundai_sonata_hybrid_a_good_car.pdfIn PDF document text
    • http://nununad.myartsonline.com/36347856363.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/1672454736.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/armaan_malik_songs.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/xirizugizenurisuzanu.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_off0000c378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC378 5796 bytes
SHA-256: fb15cb807fd515fea25c312e561b44fc4e79fe6b6d4442f45e3710b901aafd67
font_01_sfnt_off0000d756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD756 10684 bytes
SHA-256: ed54a0bd5a81dacfca758abf13cab957e124c8dbf6fd815fbc2b740a103add38