Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfac80b7bcf59413…

MALICIOUS

PDF

68.3 KB Created: 2021-02-13 01:49:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d5b23d71438de654066b8fde16a4109f SHA-1: e2fb2e0433dcd7fa56552134d9fa79fe27c3016e SHA-256: cfac80b7bcf59413bd3e4666997c6b0669f056e1e5426b851153c7f1f43d5310
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/wix?keyword=topic+1.6+principles+of+american+government+answer+key PDF link annotation
    • https://durabaseduxoj.weebly.com/uploads/1/3/4/2/134235759/3b9e58426bd.pdfIn PDF document text
    • https://zemizipip.weebly.com/uploads/1/3/4/0/134098502/27a31761d.pdfIn PDF document text
    • http://mpvideo.org/21180990007uwgt8.pdfIn PDF document text
    • http://fejituwetogin.iblogger.org/bakasura_kannada_film.pdfIn PDF document text
    • https://jukejifoka.weebly.com/uploads/1/3/5/3/135311866/waxedimexabi-xekar-dulovukadoj-giwenu.pdfIn PDF document text
    • https://puxibaso.weebly.com/uploads/1/3/0/9/130968956/5323296.pdfIn PDF document text
    • http://euroshopme.site/mozilla_firefox_50_for_windows_10ofm3u.pdfIn PDF document text
    • http://zeweduzu.iblogger.org/sosefobasubotesex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nukuzuxowilaz.epizy.com/bcca_management_guidelines.pdfIn PDF document text
    • http://juxugalipexobow.epizy.com/bitdefender_uninstall_tool_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/qantas_frequent_flyer_membership_application_form.pdfIn PDF document text
    • http://kegibuluwuridof.epizy.com/gikirakixaraxiluxugened.pdfIn PDF document text
    • http://sibopujisovutu.epizy.com/seagull_scientific_bartender_10._1.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/online_registration_form_of_sainik_school.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_off0000c4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E2 5840 bytes
SHA-256: 1f98e3dc8468cd5d74c871a9c122e8f1c6060fbd6a5fcbe68fe5c1ec7f84d959
font_01_sfnt_off0000d8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CE 1716 bytes
SHA-256: 7314a8110a688275e79cb4cd5cd058a9f858becaa7f01fde0a687197ddc85302
font_02_sfnt_off0000e159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE159 10028 bytes
SHA-256: 99ac699979c45ee40812809d73c22d7a468c9f2088d935ee00811f224328674a