Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b3db147df02284…

MALICIOUS

PDF

65.4 KB Created: 2021-03-03 10:56:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6966eaf1fd90a10cb486bb4ba65be970 SHA-1: 57b2081a69a457cd14fc3236afc9ae4da2cbaa90 SHA-256: 44b3db147df02284ffd7c97a61acbd14411d8c21cfa614b71ad1594a625cf7ee
126 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
  • 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://jacksth.ru/award?keyword=how+to+repair+dyson+cordless+vacuum PDF link annotation
    • http://lefijuf.iblogger.org/wofarukezuma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413702/normal_600394943342c.pdfIn PDF document text
    • http://xarusogu.22web.org/how_to_translate_bible_in_greek_and_hebrew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_602495f417807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387031/normal_6029267305fef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454040/normal_60052f74d5fb4.pdfIn PDF document text
    • http://proita.fun/521605575081j1up.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388183/normal_5ffc0505427a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459166/normal_601f211f0173b.pdfIn PDF document text
    • http://geniusenglish.space/ancient_astrology_books_free_downloadiffsp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://begalokatixatu.epizy.com/kofakexewupizo.pdfIn PDF document text
    • http://tijetefewojo.epizy.com/44076633655.pdfIn PDF document text
    • http://xegefonupekowa.epizy.com/53941356626.pdfIn PDF document text
    • http://luxotenudiwuzu.rf.gd/android_portable_fast_charger.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_off0000c41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC41C 5432 bytes
SHA-256: 04182da7dbf5ed0e8372aa90376f5ffcffa896c2161de78d10d627b98593aef7
font_01_sfnt_off0000d69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69F 10048 bytes
SHA-256: 3803daf3b58c1a92328ed984634ab9eca1bb96514cd607fb11d5f7003d698da3