Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12fb7161b73efb3…

MALICIOUS

PDF

71.0 KB Created: 2021-02-15 21:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b17b5794a6ac88ba149a0d6824261d7 SHA-1: a321f51478f02adec41dfdb39af2c9a20fa7a83b SHA-256: f12fb7161b73efb30f7cd3bb93daefa813df6217a4c9132afc6642b96c56d223
214 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
  • 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://yafferge.ru/wb?keyword=childhood In PDF document text
    • https://losanuritajog.weebly.com/uploads/1/3/4/7/134730792/sitisususomorup-nefurisuf-galube.pdfIn PDF document text
    • https://torejijifixoni.weebly.com/uploads/1/3/5/3/135335296/5008260.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/ufVjijf/76354381421.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469359/normal_5fe8abe903911.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373504/normal_5fefdd6892b5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367635/normal_5ff31dc902d4e.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/eE0iZHQ/panzer_war_complete_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_60262f37746b6.pdfIn PDF document text
    • https://bodovusinorone.weebly.com/uploads/1/3/5/3/135347185/25e0df6ee9f9b91.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/kA9hi9v/percentage_calculator_math.pdfIn PDF document text
    • https://wikafifej.weebly.com/uploads/1/3/2/8/132815388/difubutadetulis-gapuxirezeraj-jojopu-mininabiziro.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/ddGvUhe/among_us_how_to_play_online_with_friends.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424328/normal_601a776e8beb0.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/fizufapu/sign_in_sheet_template_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/java_jdk_1._6_64_bit_free.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_off0000dc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC09 4988 bytes
SHA-256: ee597a6878c0f78811454c9d6e9c5ce58488e10ebd89edcb370556e32de6306f
font_01_sfnt_off0000ecfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFB 9960 bytes
SHA-256: f3b73c00a5097f3acdb54f01b327295f0d963375b77b04e495edae6160ebcceb