Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cfd4adbf5a7cb04…

MALICIOUS

PDF

82.4 KB Created: 2021-01-25 11:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ef5d8135f5a3dad738354e04e0ee4941 SHA-1: 7295b5b45681db01f56d21f6d992627f5071ddff SHA-256: 5cfd4adbf5a7cb04d869f697c48698bd779ab9db6135e0c790566cb68aee32c1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://maypoin.ru/wb?keyword=youtube%20roblox%20get%20free%20robux PDF link annotation
    • https://zakewurez.weebly.com/uploads/1/3/4/4/134471700/surazesofulil.pdfIn PDF document text
    • http://bovosidifusu.iblogger.org/today_calendar_sheet_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/1jhwjge/rock_music_definition_oxford_dictionary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367668/normal_5fc8bd92cbbf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414495/normal_5fe8fcc602ecb.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/jjaNgeW/fexukofomuzetum.pdfIn PDF document text
    • https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/5926627.pdfIn PDF document text
    • http://verification-help.com/273602290397rxpl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370275/normal_5fdce75f7c799.pdfIn PDF document text
    • https://cdn.sqhk.co/dedejosewor/cFhg2AP/block_puzzle_games_wood_collection_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405197/normal_5ff9f31d3ed37.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusarafabar.epizy.com/pejisuradoderunufejun.pdfIn PDF document text
    • http://nizalag.rf.gd/45519724554.pdfIn PDF document text
    • http://tuzekejaxegis.epizy.com/telling_time_worksheets_for_1st_graders.pdfIn PDF document text
    • http://fonobufusig.rf.gd/android_sdk_tool_setup_exe.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_off0001074f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074F 4716 bytes
SHA-256: ab24364a084200a44e0d18dd27f86afd563e77ad22f1134577aa0fe34701cd84
font_01_sfnt_off00011776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11776 11028 bytes
SHA-256: 3b96f430908d9e38fff3d192e27078e70c99ff97a64c5d2bd70ad3f85e78d49b