Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac470a313423724…

MALICIOUS

PDF

73.0 KB Created: 2021-01-21 13:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f390f7da7ef010295125b926e48af59f SHA-1: 49e76b4481ac3167dd8594ecbc869d40c4cd1b50 SHA-256: 1ac470a3134237244eb311ef906671e4cdf73dfcc7fdadc4c06f0245e721b711
186 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 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://leonvi.ru/123?utm_term=incredible+true+story+logic+leak PDF link annotation
    • https://site-1171899.mozfiles.com/files/1171899/alien_zone_raid_mod_apk_unlimited_money.pdfIn PDF document text
    • https://weraxugunelega.weebly.com/uploads/1/3/4/7/134719696/60effd67.pdfIn PDF document text
    • https://site-1245376.mozfiles.com/files/1245376/wekozex.pdfIn PDF document text
    • https://kimakinogi.weebly.com/uploads/1/3/0/7/130775446/2858213.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/yaibhb0/worm_snake_zona._io-_master_io_guides.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/nhbkiba/jetpack_joyride_cheats_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fad97bb20152.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/hAIW5ic/clover_go_apple_store.pdfIn PDF document text
    • https://cdn.sqhk.co/ninivaxibab/8Wgcifg/ludo_king_cheats_ios.pdfIn PDF document text
    • http://texewofe.22web.org/18670275918.pdfIn PDF document text
    • https://site-1175852.mozfiles.com/files/1175852/cbr_reader_for_ipad_2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sotatelovutegep.epizy.com/78795610804.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/manual_da_moto_cbx_200_strada.pdfIn PDF document text
    • http://vufobaratoja.epizy.com/finding_roots_of_quadratic_equation_worksheet.pdfIn PDF document text
    • http://puzexexaniledow.epizy.com/widujomun.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_off0000df73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF73 5352 bytes
SHA-256: bf9a5fdf829454ba438fe526c19f1db20da46fb4e7a6832832c10003b3435ed2
font_01_sfnt_off0000f1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BB 11016 bytes
SHA-256: a88ec17c71e03d162a362ab116383eb56362485360ce48562b2792edb7d23de5