Malicious PDF — malware analysis report

Static analysis result for SHA-256 2039aaea2166939d…

MALICIOUS

PDF

68.7 KB Created: 2021-01-20 00:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: be939c4b578b2702f91ae52eb134d08b SHA-1: 5c861dc0cc64458f6e953cabbb459ba7a132526e SHA-256: 2039aaea2166939d3f4a9afe740ee824ba11f94b987c0d443d789d8d28430ff7
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=banana%20cake%20recipe%20without%20eggs%20and%20butter In PDF document text
    • https://site-1171689.mozfiles.com/files/1171689/83440067746.pdfIn PDF document text
    • https://site-1166710.mozfiles.com/files/1166710/color_by_number_no_draw_apk.pdfIn PDF document text
    • https://site-1168003.mozfiles.com/files/1168003/messenger_latest_version_apk_uptodown.pdfIn PDF document text
    • https://site-1166608.mozfiles.com/files/1166608/android_barcode_scanner_library_app.pdfIn PDF document text
    • https://site-1171656.mozfiles.com/files/1171656/xudemutibebatam.pdfIn PDF document text
    • https://site-1168265.mozfiles.com/files/1168265/rainway_app_download_for_pc.pdfIn PDF document text
    • https://site-1178101.mozfiles.com/files/1178101/my_targets_archery_app.pdfIn PDF document text
    • https://site-1184900.mozfiles.com/files/1184900/how_to_play_blackjack_in_vegas_youtube.pdfIn PDF document text
    • https://site-1173855.mozfiles.com/files/1173855/bojopokomojona.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/pNtvijh/fantasy_premier_league_app_android.pdfIn PDF document text
    • https://site-1181123.mozfiles.com/files/1181123/96440792570.pdfIn PDF document text
    • https://site-1173264.mozfiles.com/files/1173264/35653949357.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bumilamufitilu.epizy.com/bootstrap_card_carousel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/wondershare_dr_fone_free.pdfIn PDF document text
    • http://zubeleboju.epizy.com/the_amory_wars_volume_1.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_off0000cf63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF63 5648 bytes
SHA-256: 261afb8b5b8f14d0ac91de25e6091d7bab48474674b406c0678c825bed9b5f99
font_01_sfnt_off0000e2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A3 10344 bytes
SHA-256: fd75ef85bfce9d0d973b757ffa9d92b043c754b2324900f8ca1397c77327dd0c