Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae38faa579f1c0b1…

MALICIOUS

PDF

72.1 KB Created: 2021-02-22 14:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 80adf021171a9450ea3eff31d68c0de2 SHA-1: e820ca981e63583d6f12261f04e4c8b6a87a3f2e SHA-256: ae38faa579f1c0b16de156e1718d5dd048e5ca7f4b5d2fe4fbc5981747719dcb
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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/wix?keyword=vikings+war+of+clans+hack+free+gold In PDF document text
    • http://nufogikije.22web.org/dovilozad.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/kdjdjcX/xutilomovivanifisekuma.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/HhaJZNB/9433589543.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/5540ad6275e0b7.pdfIn PDF document text
    • https://meputaxuxiku.weebly.com/uploads/1/3/5/3/135304120/faloruwese-mokokilufatew.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/hiijtia/configurar_retroarch_android_ps2.pdfIn PDF document text
    • http://pafiwuz.66ghz.com/image_gallery_template_html5.pdfIn PDF document text
    • http://perinolaguzur.iblogger.org/wild_animals_and_their_young_ones_worksheet.pdfIn PDF document text
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/ligoxadejevu_tuvajaxu_wirifikuris.pdfIn PDF document text
    • http://jurinijija.22web.org/the_economist_style_guide_epub.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/cIhelhc/super_dancer_chapter_3_episode_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewugozosefo.epizy.com/auto_tune_pro_vst_free.pdfIn PDF document text
    • http://ruzevatiwabakiz.epizy.com/laboratory_layout_design_guidelines.pdfIn PDF document text
    • http://jabowedufup.epizy.com/jumuzaruzixejamuja.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_off0000dfbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBE 5404 bytes
SHA-256: 70b67ab305a77151dc15a413812359231a1789cce8280fdec4b25ca0385568d4
font_01_sfnt_off0000f233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF233 9740 bytes
SHA-256: bd83c93289bc8003847d210f4b91a785ee0f1809fa2914de0f992f9391538ce0