Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa038d13a21d16a4…

MALICIOUS

PDF

70.3 KB Created: 2021-02-17 04:05:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a2bae5f0520b2f073407fe57952eb8a SHA-1: b514a7f8ec5d01a54e8dfe6ed7696955cc109b1f SHA-256: aa038d13a21d16a4ee58c88551c175815486c190a9eff7ef57dcd2bf915d59b8
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://maypoin.ru/wix?keyword=comedy+improvisation+manual PDF link annotation
    • https://cdn.sqhk.co/womibakok/f0ijgjh/96380202716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_601f6b4da5ca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414691/normal_5fde62b475210.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369930/normal_5fcc55c4f0766.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/j2gjjjg/racechrono_pro_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_6017483350669.pdfIn PDF document text
    • http://harkateine.fun/xuwizivekeg3n25z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389108/normal_6018a16353e55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466370/normal_60071c99d6856.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_5fe7171c5f2dc.pdfIn PDF document text
    • http://fenellalucynelle.info/xetefalomufad247yp.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/funny_pastor_wedding_speech6m9ch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485711/normal_5febef673c2d8.pdfIn PDF document text
    • http://cartest.pro/bronze_age_inventions_timelinejjpm8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487622/normal_602356bfe5885.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/eij22QH/jisow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_601a388f8158b.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/vazisi/archeage_unchained_pts.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/63410880499.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/zupamamipevakafim.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/compare_two_excel_sheets_data_for_differences.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_off0000d724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD724 5172 bytes
SHA-256: 53085b1948f62fdf095fe09df1b30e79e0c4a78a04464e130bc3fb919477b7f2
font_01_sfnt_off0000e8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AA 10248 bytes
SHA-256: 7abe97e8370b73627505920cabf92a93afcdd682c50f6fcb36a94601a4d3b1c7

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