Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a7e52d17e10273d…

MALICIOUS

PDF

66.8 KB Created: 2021-02-20 18:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7b630f90d6a3c438eda41c191672761d SHA-1: cad3c82e31795db8556584d87c3b4bed7845f83b SHA-256: 2a7e52d17e10273d09401948126f85b309437a6fe7d8745f5c69f7d6a7e032bf
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=dr.+slotsky+chemistry+ii+molarity+problems+worksheet+answers PDF link annotation
    • https://valezuxaj.weebly.com/uploads/1/3/4/6/134650604/nexuwaletukojaji.pdfIn PDF document text
    • https://verakolor.weebly.com/uploads/1/3/1/3/131379730/ruziwuzixusiru.pdfIn PDF document text
    • https://cdn.sqhk.co/wegodimumod/ggCMjcA/balance_ball_game_download_softonic.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxumududu/eYjjMhj/scary_wolf_sounds_mp3_download.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/1062032.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/Nidhh6t/dalifatodisijuzamo.pdfIn PDF document text
    • https://pizijejubuga.weebly.com/uploads/1/3/4/8/134883891/4329423.pdfIn PDF document text
    • https://cdn.sqhk.co/jenojigise/gchaicw/war_khalid_theme_instrumental_ringtone_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kolusugego/f0gdB9E/ups_pilot_salary_2020.pdfIn PDF document text
    • http://zojulosopejozaz.iblogger.org/bindaas_bengali_movie_all_video_song.pdfIn PDF document text
    • https://siwizapetodid.weebly.com/uploads/1/3/4/0/134041585/5812355.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/suximawo/laruwelidul.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/23903555592.pdfIn PDF document text
    • http://rajiwewovipu.epizy.com/turboprop_flight_simulator_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/marketing_strategies_of_coca_cola_project_report.pdfIn PDF document text
    • http://robavumu.rf.gd/dow_engage_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/bitdefender_mobile_security_antivirus_full_apk.pdfIn PDF document text
    • http://komusera.rf.gd/wufoduti.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_off0000c9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B8 5600 bytes
SHA-256: 9233c6fb9d7cf3140bbf112e7d28c95159952c8a1f220af5124e0d09388ee8e4
font_01_sfnt_off0000dcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB6 9716 bytes
SHA-256: 6b3a24014347a5669acfeaa108b0f37ea3e31fc81026b2715d0794818d87542e