Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d1e8c1b95151ab…

MALICIOUS

PDF

80.7 KB Created: 2021-02-18 02:28:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3a596afa37f9d88b5d85a80fd6d11888 SHA-1: d830079e6ace9b85c3e22d1bd962950a2a68b7a8 SHA-256: 09d1e8c1b95151ab179dcf942656ac35aba02aae9c7f2ce2464023e8e10ce177
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://jacksth.ru/strik?utm_term=what+does+black+boy+joy+mean PDF link annotation
    • https://cdn.sqhk.co/jumifokujuje/hiSjmzq/merge_dragons_challenge_19_help.pdfIn PDF document text
    • http://sijazoge.iblogger.org/spotify_premium_pc_apk.pdfIn PDF document text
    • http://toleritikujomuj.22web.org/military_reporting_statement_format.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzudulo/ijhcbgd/7119650255.pdfIn PDF document text
    • http://sewiximafa.22web.org/33125373587.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/juGCfjc/portal_knights_switch_local_multiplayer.pdfIn PDF document text
    • https://cdn.sqhk.co/bujiwamovul/hiiuFgd/zombieland_2_sortie_netflix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zulexesovo.epizy.com/hazardous_materials_identification_system.pdfIn PDF document text
    • http://depegiwisa.epizy.com/letter_of_application_teaching_template_uk.pdfIn PDF document text
    • http://besipopi.epizy.com/colours_tv_live_show_app.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/99904589615.pdfIn PDF document text
    • http://misamoxatupepos.rf.gd/25010633960.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/67178934785.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/how_to_use_router_template_guide.pdfIn PDF document text
    • http://bijiwamosijiw.epizy.com/kekovunukize.pdfIn PDF document text
    • http://jojudodadanu.epizy.com/registration_form_css_template.pdfIn PDF document text
    • http://vunaduwijumuz.epizy.com/what_does_ref_code_s0a00_mean_for_xfinity.pdfIn PDF document text
    • http://kafojifonetawaj.rf.gd/adecco_group_ag_annual_report.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_off0000fd0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0B 5476 bytes
SHA-256: 93870a347758c799dec0de19fe043354f4dbcf320edfc424b55a17fdc5bbb9fe
font_01_sfnt_off00010fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA4 11216 bytes
SHA-256: 9c7ca789b7bac256cd490c09f1a6c3d0ad7ae92eab6f6e8997572c0f87f34ac4

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