Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bdbf2f18a740d4d…

MALICIOUS

PDF

61.6 KB Created: 2021-02-20 15:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e46318b57a9fdd55ee99555bfd60c760 SHA-1: 425162edfbb1d215c47fae4343789b245290dfe0 SHA-256: 4bdbf2f18a740d4dc03432ce2e99ccef77cb58dfe8e57de557a7fc58adbf2711
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=fate+of+the+norns+roll20 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408720/normal_5fca608279360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_602e8607a9161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408184/normal_5fe8e8385169f.pdfIn PDF document text
    • http://chestlune.online/ecological_economics_an_introduction_michael_common7qpz7.pdfIn PDF document text
    • http://teagreen.space/arnold_schwarzenegger_encyclopedia_of_modern_bodybuilding_free5pt86.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/7gfeDjc/boraduxuxuko.pdfIn PDF document text
    • https://cdn.sqhk.co/lesepivir/0ifefrH/fish_eat_fish_grow_big.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494673/normal_602c6c4d779d5.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/aghwNgd/joriwagasarifizixasire.pdfIn PDF document text
    • http://forsage.pw/362208928709m6wz.pdfIn PDF document text
    • http://whalesqpa.fun/wexegudovamdi4f6.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/janodojivi/html_form_target_iframe_example.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/93834799887.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/fractions_equal_to_1_2_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/zuzitijenikagidigotufir.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/8124806512.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_off0000b5ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5CE 5084 bytes
SHA-256: 3bf3a64e06b5a0c40cb1ffeae357df3abc06a894c66d76a6a3b6bbe7ed712f73
font_01_sfnt_off0000c712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC712 10036 bytes
SHA-256: d4ca270618241110073dd80cf6e336504200ae23ad531fbca518ace2e4ea7cd9