Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f9b23438956c6c…

MALICIOUS

PDF

72.9 KB Created: 2021-03-01 05:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9128d3192cde4a6e665fc6690b616ac9 SHA-1: f856d7526359884149f3ae00aa4d8c3034dbf66a SHA-256: d1f9b23438956c6c8479a19d2b5c61bb434459cd5dfd9a6d7a31974ddafb2556
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/award?keyword=ferrari+california+2020+white In PDF document text
    • http://cccckkkkkdd.space/74504916638qi28i.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/xqfgiuS/paypal_credit_increase_denied.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/hi5hbji/call_of_duty_mobile_1._0_17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420014/normal_5ff67763b4a72.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/ihgjjdu/shark_attacks_on_humans_2019.pdfIn PDF document text
    • http://mp4.design/katebunizegeribabebuxosatgihn7.pdfIn PDF document text
    • http://tosety.xyz/dajinutamigoxisagusixuzu2zewi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490375/normal_5fdaef951110e.pdfIn PDF document text
    • https://cdn.sqhk.co/pujimuxuja/tihFRC2/maze_runner_calendar_2020.pdfIn PDF document text
    • http://italy-small.space/xosinonelipujoxudulywmgp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461484/normal_5fc5c9ab02146.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/jf7geha/brick_game_application.pdfIn PDF document text
    • http://003-center.ru/how_do_i_connect_my_bose_wave_soundtouch_4_to_bluetoothkdixu.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/Ydcjhii/4_square_template_microsoft_word.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/how_to_make_origami_crane_with_origami_paper6imoa.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/hbcjigd/iiroc_business_continuity_plan_development_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/WCQjflC/disneyland_paris_deals_2022.pdfIn PDF document text
    • http://klyshsheff.xyz/ultrasound_guided_elbow_aspirationc8b6l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415935/normal_6003e70564fc4.pdfIn PDF document text
    • http://ketadiets.site/android_auto_beschikbaar_in_nederland1oqlw.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/tesotiwapax/jonasimixurowupal.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/15864441999.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_off0000e0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D5 5112 bytes
SHA-256: bbb21cf762df0035f2a5fd6ad217738df207e5c6972796e0986fb8645958fe3c
font_01_sfnt_off0000f24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24B 10492 bytes
SHA-256: b0fab7884acb8dde583fa1fd9ef6187af8dafbe99b707cdabccec84885360e1e