Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b824ddbb12e68b…

MALICIOUS

PDF

67.7 KB Created: 2021-02-17 16:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e3aa03af5930bb93933b6bccbee872bf SHA-1: 0210f8bee3df12a4fc2d693a9a79cc4e9a58e49f SHA-256: 41b824ddbb12e68ba7298ecf0be1787f06eec906b3c2c6f823521dd6328c1024
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/wix?keyword=aircraft+electricity+and+electronics+thomas+eismin+pdf+free+download PDF link annotation
    • https://jodegometokak.weebly.com/uploads/1/3/1/6/131606115/furokilurizavurala.pdfIn PDF document text
    • http://topplafond.xyz/china_visa_application_form_hong_kong_residents5ggkk.pdfIn PDF document text
    • http://kukushpa.fun/rowinapebomezazi9qvgl.pdfIn PDF document text
    • http://bupro.asia/guitar_chords_for_beginners_songs_hindipkzi7.pdfIn PDF document text
    • http://homiak.fun/wantmatures_how_to_delete_accounta4kxf.pdfIn PDF document text
    • https://fadefewili.weebly.com/uploads/1/3/4/3/134316521/jikofefafatuf_boxox_sixumub.pdfIn PDF document text
    • http://kuxufijum.iblogger.org/uc_browser_new_version_2018_pc.pdfIn PDF document text
    • http://canonsburglake.com/the_team_manager_in_spanishuceu4.pdfIn PDF document text
    • http://berkeciftci.net/3758987270649kb4.pdfIn PDF document text
    • https://davijonixumitu.weebly.com/uploads/1/3/5/3/135349017/rokajew-ziwanarifosa-pokiluwi-vujerozolepe.pdfIn PDF document text
    • https://beziremisolexew.weebly.com/uploads/1/3/4/6/134656792/rerizavuvade.pdfIn PDF document text
    • https://wosumugip.weebly.com/uploads/1/3/4/8/134867897/3727453.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
    • https://s3.amazonaws.com/jeromopelurab/fda_guideline_for_comparative_dissolution_profile.pdfIn PDF document text
    • http://bizimefinuwonij.rf.gd/1755430221.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/geographical_indications_india.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/android_tv_box_no_tt_nht.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/clearance_certificate_rto_format_telangana.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/duvevinerojavibakebepi.pdfIn PDF document text
    • http://vopezaxaf.epizy.com/suvuputowez.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/livilokitegowadezajipufe.pdfIn PDF document text
    • http://fasilew.epizy.com/17820709099.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_off0000bf2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF2B 5368 bytes
SHA-256: 27f6b1d3f160e0d0bfc1dde9be2a4ce43411476cdea6676674bb4be8391393fc
font_01_sfnt_off0000d147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD147 10156 bytes
SHA-256: 21ad822b89d8609cfd8781142209b7ba8d67867de5153043af46dfc0184b9a63
font_02_sfnt_off0000f2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3