Malicious PDF — malware analysis report

Static analysis result for SHA-256 9384cbc859ecaa0b…

MALICIOUS

PDF

64.9 KB Created: 2021-02-13 01:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: da9bdb939ca4339e8766de198209eafc SHA-1: f5d036f8703f341354953f4da3f13f4990e0d240 SHA-256: 9384cbc859ecaa0bdb585a0231d9c3f3bc358057623401c574654318675edd64
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=berserk+pdf+portugues PDF link annotation
    • https://cdn.sqhk.co/tovipovo/DyyghI0/dagedabovajapugot.pdfIn PDF document text
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/femitamolebox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469116/normal_5fe7c44386ea5.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/gggijiH/tamil_love_sms_ringtones_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sepovili/iPQ5icQ/61075914433.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/nejuxuluxes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416659/normal_5ffe050ab900b.pdfIn PDF document text
    • https://cdn.sqhk.co/rakapuvad/KSyjcje/85467900810.pdfIn PDF document text
    • https://mufisifarugevap.weebly.com/uploads/1/3/4/5/134595961/1936013.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/21je9BU/59541732611.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426816/normal_601207c2ae490.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/rhisWkQ/18290505947.pdfIn PDF document text
    • https://cdn.sqhk.co/zeburozupax/hgcgiHj/vikings_season_3_episode_6_imdb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kibululugavi.epizy.com/67386064417.pdfIn PDF document text
    • http://wiwekire.epizy.com/get_background_color_view_android.pdfIn PDF document text
    • http://nifopufu.epizy.com/13596492310.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/annabel_lee_poema_espaol.pdfIn PDF document text
    • http://fabupumow.epizy.com/namijito.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_off0000c283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC283 5080 bytes
SHA-256: adc2717a476066bdb31b00a42bf450bb8794b14415a88e2e851a1349b3d60f8f
font_01_sfnt_off0000d3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E7 10208 bytes
SHA-256: e9459cb6fd4730b51fb6ca5128c2c923cef99cc303264813178d062d4fd0bf27

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