Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7a0adacc2ffdd5…

MALICIOUS

PDF

69.6 KB Created: 2021-02-15 01:36:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7430327184b363a1884885db9de1124 SHA-1: 2863c63c347c36eefb45b0afaaad6f91d464a6f7 SHA-256: cb7a0adacc2ffdd5f2bcc11c8c323b16a18bab0595c45d7986c2e236c6f86828
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://jottigo.ru/123?utm_term=one+book+rightly+divided+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482671/normal_60055f8b4cbef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5fe0ed6f93d2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407994/normal_5ff9ffa464502.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/biiTigY/norwalk_premiere_theater_showtimes.pdfIn PDF document text
    • https://rixukiwifezi.weebly.com/uploads/1/3/5/3/135392959/xewulid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373241/normal_5fda050a5947f.pdfIn PDF document text
    • https://kapalane.weebly.com/uploads/1/3/0/9/130968981/8898300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_5fd163bb4a02f.pdfIn PDF document text
    • https://fitokuzigijot.weebly.com/uploads/1/3/4/6/134681543/4788400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465136/normal_601337423e857.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivowutone.epizy.com/zebijomumolubotegufa.pdfIn PDF document text
    • http://kesazubajumat.rf.gd/imperative_verb_form_spanish.pdfIn PDF document text
    • http://xovigogijexivof.epizy.com/tasul.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/lanetopalofewajazibuz.pdfIn PDF document text
    • http://sipariwemarisu.rf.gd/lifelight_piano_sheet_music.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_off0000d42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42D 5308 bytes
SHA-256: 9759718effdadbe7ad0882abae8649642646145fe65b1bc52beab61248ed07b1
font_01_sfnt_off0000e642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE642 10492 bytes
SHA-256: e8ff5693a52d04f4b9da171f042c8ca07642d3b32b31d5d030fd39d44eda737a