Malicious PDF — malware analysis report

Static analysis result for SHA-256 c622b23f93e3013f…

MALICIOUS

PDF

64.0 KB Created: 2021-02-21 03:08:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 148b35b685e7758e848465b8f4f0218a SHA-1: f19ad87c8e114339b623eddfb5f747604b53e493 SHA-256: c622b23f93e3013ff9e6a5c4f4f0bde3ea94da7b49bd25c1e67f7474b379285e
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/aws?utm_term=classic+langston+hughes+poem+crossword+clue PDF link annotation
    • http://gratoraama.website/rugby_league_2019_mod_apk2g24t.pdfIn PDF document text
    • http://kinorio5.xyz/najuveguxatatofxrbdv.pdfIn PDF document text
    • http://lighterusb24.site/478855152570unwj.pdfIn PDF document text
    • https://ruxibudowivuk.weebly.com/uploads/1/3/4/7/134728491/0829d84327a.pdfIn PDF document text
    • https://geguxawuxereko.weebly.com/uploads/1/3/1/3/131379712/1001528.pdfIn PDF document text
    • https://dopovubejaxow.weebly.com/uploads/1/3/4/0/134017692/595f019c3557de.pdfIn PDF document text
    • https://zavebunerug.weebly.com/uploads/1/3/4/3/134358754/a8423d.pdfIn PDF document text
    • http://werewov.22web.org/amyloid_peptide_formation.pdfIn PDF document text
    • http://rofavaxob.iblogger.org/carrom_board_video_hd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497359/normal_60242838a3267.pdfIn PDF document text
    • http://italia-doc.fun/golds_gym_xrs_50_exercisesh1up7.pdfIn PDF document text
    • http://gijofabenetawix.66ghz.com/ezreal_build_guide_season_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496015/normal_5fda1b29613d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470533/normal_5ff97491b6d77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zasegusof.epizy.com/believer_song_karaoke_free.pdfIn PDF document text
    • http://wewapozolebupo.epizy.com/bible_verse_wallpaper_for_mobile_free.pdfIn PDF document text
    • http://zumijuxuv.epizy.com/nursing_quality_improvement_project_template.pdfIn PDF document text
    • http://nijufunirel.rf.gd/pawulogeminugaxijureg.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_off0000bd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD72 5484 bytes
SHA-256: cf874899ea00be7769307f470fd343603f572f2428ab86d8b1f3e104c703fdfa
font_01_sfnt_off0000cff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF5 10228 bytes
SHA-256: 33e2bd1e2e817bebcda18a8efe73a8878818ca3f17b2458b6287bc093034c623