Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b4e52f7c348c5b…

MALICIOUS

PDF

83.9 KB Created: 2021-02-14 22:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 41451a9f1e7fa79073c9717c5be8d77b SHA-1: 65171417433da81a08b17ba5eed35556fb7a6549 SHA-256: 19b4e52f7c348c5bb1b61bc9174fa2158bb83aa3c096aa6093ff722b58b80ea3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=automatic%20screenshot%20capture%20app%20for%20android PDF link annotation
    • http://wafejefasa.iblogger.org/2005_chrysler_300c_service_manual.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/14235c7933488.pdfIn PDF document text
    • https://pufukowog.weebly.com/uploads/1/3/4/5/134583281/kejukumurokavo.pdfIn PDF document text
    • https://lexezidelaxo.weebly.com/uploads/1/3/4/6/134605078/kefadesadeneremapa.pdfIn PDF document text
    • http://nigma24invest.online/dungeons_2_game_of_winter_guidemoqj1.pdfIn PDF document text
    • http://nesobaka3.xyz/archero_abilities_guidefs7bw.pdfIn PDF document text
    • https://lezevonunibo.weebly.com/uploads/1/3/4/5/134577944/jigisibedemal.pdfIn PDF document text
    • http://salonly.xyz/962005361105dc9k.pdfIn PDF document text
    • http://x-bionic.shop/vivugezuxufuxikudimlnvo5.pdfIn PDF document text
    • http://lefefegibilapo.22web.org/website_design_mockup_templates.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/tobaziw/ella_henderson_ghost_sheet_music.pdfIn PDF document text
    • http://jikorali.rf.gd/62815967594.pdfIn PDF document text
    • http://kutubuge.rf.gd/wunixun.pdfIn PDF document text
    • http://gajazuwowawe.rf.gd/anatomy_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/xulakabadatopuwunobig.pdfIn PDF document text
    • http://damabop.epizy.com/sofovemoxavuvuwetedukuris.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/english_worksheets_5th_grade_esl.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/23619410696.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_off00010c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C56 5352 bytes
SHA-256: b1a01d6a2fd6e0b42595c4bf1f00b6a3f24f0a35609740a7af3fdd45e4344313
font_01_sfnt_off00011e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E62 10548 bytes
SHA-256: 0ea719377086e14dd3ce1a672b3c8dbd25433dad55da2a7c224f942669d8b769