Malicious PDF — malware analysis report

Static analysis result for SHA-256 a623fbf73fb4e02a…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 16:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cfdaf5c77ca9ea88b06627bb67f74cd4 SHA-1: 2223c8a100896931a87f99b8ab0a4603104fcb12 SHA-256: a623fbf73fb4e02a89eabeccf99d6795a7a3acb3a3d645f032818e63381ccea6
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://mezovuduw.ru/award?keyword=is+sandisk+secure+access+free PDF link annotation
    • https://cdn.sqhk.co/tijaxasazuwi/FjfhfqY/app_lock_fingerprint_apk_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463298/normal_600aa3d13933e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470532/normal_5fd1b9eaa29ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388424/normal_60378cdfbbeee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368772/normal_5fff5b25db850.pdfIn PDF document text
    • http://gonuzigodu.iblogger.org/hp_6500_printer_disassembly.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/eggiije/magic_snake_cube_instruction_ball.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/jgeIOJQ/weluvoloregosuliw.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/iaW2hji/xopegoset.pdfIn PDF document text
    • https://cdn.sqhk.co/pawapoma/ehjYgj5/python_war_card_game_oop.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/fidEU6v/pamogu.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxarulenogu/cthgI88/cosmology_philosophy_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/wexapitode/Cc8UjbV/best_german_english_dictionary_app_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/leloxoreje/eGjaghI/4338567900.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gulesovel.epizy.com/dawuxaladem.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/lalodomixafunuzikelukut.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/baby_animals_photos_free.pdfIn PDF document text
    • http://morisexisaxewa.epizy.com/on_vous_tiendra_inform_en_anglais.pdfIn PDF document text
    • http://xonifovozub.epizy.com/26914643986.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_off0000e392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE392 4984 bytes
SHA-256: cfbf351f4eba6eb87dcace97588f0e3e2d4e104457c410fd08825e23a5a63d3e
font_01_sfnt_off0000f497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF497 10112 bytes
SHA-256: c1a8f2e03778d403d86b4f55eba6f09265905772c6cbff39ddf9e4ff9658a969