Malicious PDF — malware analysis report

Static analysis result for SHA-256 71b2fcc4ca01d158…

MALICIOUS

PDF

68.4 KB Created: 2021-03-01 14:13:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a772f33e7e3de026386eb745977a3b6d SHA-1: e99f0b106b943fd018887bd3dc57fe540e4145e2 SHA-256: 71b2fcc4ca01d1587d3fde843c2580438663d4249cf74d3e5cb68580c9391930
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://gimoguvi.ru/award?keyword=thank+you+mr.falker+book PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367290/normal_6002b96241d0d.pdfIn PDF document text
    • https://jadufebifov.weebly.com/uploads/1/3/4/6/134627690/wabota.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445116/normal_5ff138c41df85.pdfIn PDF document text
    • https://xovobinawulum.weebly.com/uploads/1/3/4/8/134883327/2867715.pdfIn PDF document text
    • https://gopadafuwidu.weebly.com/uploads/1/3/0/7/130740623/76f6e.pdfIn PDF document text
    • http://dotapibipemeza.iblogger.org/april_2020_calendar_template_word.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376126/normal_5fffdff017403.pdfIn PDF document text
    • https://kivobuduzuv.weebly.com/uploads/1/3/0/7/130739084/bitipemiwubatex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sisawujeza.rf.gd/37033062118.pdfIn PDF document text
    • http://joxaralabodegad.rf.gd/happy_birthday_wishes_video_songs_free.pdfIn PDF document text
    • http://lunijikujapike.epizy.com/aking_pagmamahal_song_free.pdfIn PDF document text
    • http://zatunikepozis.epizy.com/bible_trivia_hard_questions_and_answers.pdfIn PDF document text
    • http://darafefe.rf.gd/halo_fall_of_reach_portugues.pdfIn PDF document text
    • http://lukigek.rf.gd/diluma.pdfIn PDF document text
    • http://rowagaparik.rf.gd/arcgis_server_10._7._1_installation_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC512 4868 bytes
SHA-256: 9ec2264f201f7ce3bd2b1041fd47137ac572885c3e4eeb3474bc16a2894d4ae6
font_01_sfnt_off0000d570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD570 9752 bytes
SHA-256: 9e49d704304d7b56d3914aba1e16cf9b5b7b81a691640bd636a416188044fdb8
font_02_sfnt_off0000f6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f