Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2148157d577bc1…

MALICIOUS

PDF

71.1 KB Created: 2021-02-24 01:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 26e9775bd06c82d6ed938d03ea39f96c SHA-1: dc71e3cd14f4fbe103d83444fa8eb3e6fe3cda86 SHA-256: af2148157d577bc1fa4a73c697fdb1a9c02a7e8a0cb960928966d3f97ee3d722
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://baarspo.ru/123?utm_term=maya+angelou+death+oprah PDF link annotation
    • https://cdn.sqhk.co/dujagazatad/glgj9if/robutoni.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/aii8if8/kill_viruses_in_water.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/iaaGNgd/sim_toolkit_app_not_installed.pdfIn PDF document text
    • http://xupevagadozojad.22web.org/55861903395.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/d5hfwZB/92189817127.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/pihZh20/download_ultimate_robot_fighting_mod_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/makulowujip/Tgd1jjv/nasufevoxegikonigin.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/hjieWhi/drop_stack_ball_game_mod_apk.pdfIn PDF document text
    • http://bofesota.66ghz.com/android_file_transfer_mac_bluetooth.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_601cda61653b0.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/LCJ39ge/finur.pdfIn PDF document text
    • http://sesapoleva.22web.org/paths_to_recovery_step_12_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/bggIojf/counter_terrorist_game_free_download_for_pc.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/purixifusipelid/46386927073.pdfIn PDF document text
    • http://nosikugabuvisal.epizy.com/shazam_app_for_nokia_500.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/video_lagu_kartun_anak_lucu.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/ash_vs_evil_dead_mp4_movie.pdfIn PDF document text
    • http://fexeledusezeto.rf.gd/juwanaritale.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_off0000d98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98C 5152 bytes
SHA-256: 27cf15c17c01197916f2180dae645148b3471ccdabfd2054c880497a20dd234a
font_01_sfnt_off0000eb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1E 10552 bytes
SHA-256: 04414c978657456ab4d8657c17d28ee415ded38047516805505a87e7f52f956d