Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50d41063d5203ba…

MALICIOUS

PDF

73.7 KB Created: 2021-02-14 15:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bca37e4c29d41003472514a8b14d075f SHA-1: 08ea794e5ad7789fc32245446dddcc9d2c80c1e4 SHA-256: a50d41063d5203babb115d796bd0f0ba81b629b120ee6222830d6a04e7d3879d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://druttle.ru/wix?keyword=bloon+td+5+hacked+download PDF link annotation
    • https://joxisewegiwazev.weebly.com/uploads/1/3/4/6/134669132/8486873.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/uzhfjdF/93140697205.pdfIn PDF document text
    • http://yesnutural.space/factorising_quadratics_worksheet_a_level8pwj4.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/f9gcAiW/electric_guitar_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/hgikghP/the_rolling_snowball_2_3_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_6025a6e6a6f61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5fe0f5601e06c.pdfIn PDF document text
    • http://kulinar2020.site/three_sisters_oregon_hotelsufck2.pdfIn PDF document text
    • https://cdn.sqhk.co/fenogate/gRfgjs7/givepagok.pdfIn PDF document text
    • https://boxijobanopuvob.weebly.com/uploads/1/3/0/7/130739783/98021.pdfIn PDF document text
    • http://umdtheatre.ru/dafepexofefeberixr7aij.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/efabf044f974a.pdfIn PDF document text
    • https://badosajag.weebly.com/uploads/1/3/1/4/131407507/kunituripavejamabigo.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/ajaie6z/x_games_mega_ramp_height.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/jijari/trasplante_de_medula_osea_2013.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_off0000e6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 5084 bytes
SHA-256: a946d26729e0da9993d6d4409c05b41be0f6400a0153898ed2ddaecfd742da45
font_01_sfnt_off0000f807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF807 10016 bytes
SHA-256: 1e46a9d742d629dc52777a858ddbe1611db474ea7ad6b54e369b37a6e51e55fc