Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb76663e84fdf8cd…

MALICIOUS

PDF

62.8 KB Created: 2021-02-21 05:07:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fda407de01606d41fc7b17bfc60d2e57 SHA-1: 4abc5212abce24ac6efe60839058062dbe0ffbb6 SHA-256: fb76663e84fdf8cdac7668b37facf1c4bf91b3911a695a8105b9cc78110f06c8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://crophysi.ru/123?utm_term=angelcare+ac401+baby+monitor+manual In PDF document text
    • https://cdn.sqhk.co/lawikuto/aqidiat/19870895953.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/bharathi_kannamma_tamil_movie_hdpjou5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485828/normal_6007baa8c8950.pdfIn PDF document text
    • http://gakmancreatures.ru/71636859148layyq.pdfIn PDF document text
    • https://jopokoguse.weebly.com/uploads/1/3/0/8/130874396/dba26d73f67.pdfIn PDF document text
    • http://future-techno.ru/work_visa_form_nz_immigrationxg0s5.pdfIn PDF document text
    • https://jenetekeze.weebly.com/uploads/1/3/4/7/134772573/sedibawob-wigolokakitu.pdfIn PDF document text
    • https://fulimutalez.weebly.com/uploads/1/3/4/5/134599943/xunumepeligove.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_602035e612099.pdfIn PDF document text
    • https://xujikipige.weebly.com/uploads/1/3/1/3/131379844/9362803.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470535/normal_600f1661ed6b4.pdfIn PDF document text
    • http://1freedom.space/tojesexerosabebusbhul4.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/firukoxapixejof.pdfIn PDF document text
    • https://cdn.sqhk.co/joninopi/ahaKggf/27369179102.pdfIn PDF document text
    • https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/zamutelukol.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/43hhjgJ/off_road_car_racing_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/9dkMagf/toilet_making_running_noise.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/097162f29e5f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB969 5452 bytes
SHA-256: 6a964ef2467e6a5e4547cb02081449158319eb53acad49b0a911415507af05c0
font_01_sfnt_off0000cc00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC00 9460 bytes
SHA-256: e25130ca5725fff29f08865b6fd22eef6f06ad975bb97d707006497679cc8208

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