Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa9873b6e1f098a…

MALICIOUS

PDF

72.0 KB Created: 2021-01-25 08:09:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: dae1448c2f77cdbcec77e9ee01fdf7c3 SHA-1: dc817e2fd4fb0b94ad41c22aadf8f09eab27968b SHA-256: 7aa9873b6e1f098af98bb0ce88bf0100d756ddc2ef29b919601ee3c90ae76a03
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/aws?utm_term=asmanex+generic+form PDF link annotation
    • http://iglivesupportteam.com/18160706176h9bgy.pdfIn PDF document text
    • http://kopavavabigi.66ghz.com/47795995304.pdfIn PDF document text
    • https://venefosek.weebly.com/uploads/1/3/1/8/131871910/kapanekomizidim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407756/normal_5fcb6e67b4be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5fd67947dedaf.pdfIn PDF document text
    • https://rinavupitaf.weebly.com/uploads/1/3/1/1/131164375/591337.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471081/normal_5fe17bf6269d3.pdfIn PDF document text
    • http://wei-nmvc.com/drum_set_online_record41kva.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/denodilasabug.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/getizar/15363653545.pdfIn PDF document text
    • http://judixipe.epizy.com/zabekakixelukopub.pdfIn PDF document text
    • http://nuxumejaxumem.epizy.com/gugolagiwebojalud.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/du_d_unit_question_answer_2019-_20.pdfIn PDF document text
    • http://zozoresupiz.epizy.com/97229906549.pdfIn PDF document text
    • http://kegipufi.rf.gd/jakiwin.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_off0000db54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB54 5228 bytes
SHA-256: 9108c7f0296eab959377754e2752cd8686c632c61fcb2327c975016a04e5e493
font_01_sfnt_off0000ed0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0D 11408 bytes
SHA-256: 953d98cae4a7c596e8aa64f1e6ff4e184ecb1943051358b385954751dd34d0c9