Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d520ff145737df5…

MALICIOUS

PDF

61.2 KB Created: 2021-02-20 00:06:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3e1acdd5a7a79897b66b84c14b27ae8e SHA-1: b3648224a0f92d6975742d583751682a494b363a SHA-256: 5d520ff145737df538aa4608b0d75d35c36d5347cf9426fedd76cb352aaf99b9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=clicker+garage+door+keypad+manual+klik2u PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5fdc6da5ef3ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393362/normal_602583bc7d246.pdfIn PDF document text
    • https://tewosafaxuw.weebly.com/uploads/1/3/1/3/131379700/kotumegasaveve.pdfIn PDF document text
    • https://xoxatujetila.weebly.com/uploads/1/3/0/7/130775098/b0781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_5fea2e5e95642.pdfIn PDF document text
    • http://rmk4sale.xyz/ncstar_ar-15_magazine_speed_loaderz2flg.pdfIn PDF document text
    • http://ellmax-site.xyz/40365975712jt29q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bajokupubapi.rf.gd/53722766003.pdfIn PDF document text
    • http://xubaforan.epizy.com/aunty_number_1_govinda_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/expression_of_interest_job_letter_template.pdfIn PDF document text
    • http://pamapezule.rf.gd/rematipozi.pdfIn PDF document text
    • http://vofufedufis.rf.gd/fitted_sheet_sets_online.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_off0000b36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB36D 5420 bytes
SHA-256: a1480689719df3499ce5418b2ca7f59e523172bddfbed766ccedb62ca43fed69
font_01_sfnt_off0000c5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D0 9980 bytes
SHA-256: dd532713ea7c1905f24aa5a94fa536a40baf378ee8b3dbaa5d58d1251b59120f