Malicious PDF — malware analysis report

Static analysis result for SHA-256 776058aa198985e1…

MALICIOUS

PDF

77.8 KB Created: 2020-12-27 03:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 82453c726e340c1aa882d1978378b089 SHA-1: e1cb4ff995c3aeea257f3ba7697ec6f003e878b5 SHA-256: 776058aa198985e1d44cd896228a4f3c9496e138436449a8f19ac933111182e0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 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.
  • 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://traffine.ru/aws?utm_term=chak+de+india+film+audio+song In PDF document text
    • https://cdn.sqhk.co/zegetaru/fCiehji/mortal_kombat_scorpion_wallpaper_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/Ogiiiha/descargar_chatous_hackeado.pdfIn PDF document text
    • https://cdn.sqhk.co/mikibitugusu/hgib1id/39409963829.pdfIn PDF document text
    • https://cdn.sqhk.co/sabeludejem/jfGOjib/nasid.pdfIn PDF document text
    • https://cdn.sqhk.co/tewisifupib/chjgdEw/vstep_ship_simulator_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzonabudad/FeichhQ/wamexugemeg.pdfIn PDF document text
    • https://totixibepetuter.weebly.com/uploads/1/3/4/3/134345693/valijiloduxuwa.pdfIn PDF document text
    • https://tifedufuzitiji.weebly.com/uploads/1/3/4/3/134353288/zejakiwukeloxe.pdfIn PDF document text
    • https://cdn.sqhk.co/nezafomura/jhjeqzf/jewad.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzewekafan/gjeyjf1/get_lucky_bass_tab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475847/normal_5fbe92f9bd07a.pdfIn PDF document text
    • https://cdn.sqhk.co/zazavoxujub/cm7ja92/cricket_tournament_application.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/aa379232-8e6b-4e11-b175-c0ccf06f5b48/1136181717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c63e93fb-86b0-413d-80dc-90b4bb001169/nuzevovazerabonulod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/515b0dbd-22c7-454d-af2c-7cbf4f966227/gijufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/722561e4-e682-45ee-a8d5-c1f8d72e6f27/new_interpreter_s_bible_commentary_ten.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B2 5112 bytes
SHA-256: b73ea069cc480738f7c63777124b195ad94cbf668d793d78a2e022ffdbe46e76
font_01_sfnt_off0000f6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6ED 11136 bytes
SHA-256: 9867034ccee81638fc2945acb919bf094a64ff21869a8073a014c728bd3666d7
font_02_sfnt_off00011c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C83 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.