Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7ab0ddf0c65c64…

MALICIOUS

PDF

71.9 KB Created: 2021-03-01 20:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3d3a1067646fe94b2870c8befcdd448c SHA-1: 6e55f0d67ef041acbad1b1827a7e6a9c8947607e SHA-256: 8f7ab0ddf0c65c6402ec48ce3596f7b18dd81d981856657c42465054606d9841
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://xezojetit.ru/award?keyword=kindergarten+math+books+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403531/normal_5ff28ef04eb59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531523/normal_601dcfeba1094.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/b79470d7f91.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/3092233.pdfIn PDF document text
    • https://cdn.sqhk.co/gosukutusu/gdjfhiA/40079447522.pdfIn PDF document text
    • https://puwuvesudalifos.weebly.com/uploads/1/3/0/7/130738622/xiberireli-mufozalupaw.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/jbjdWih/lonajovowojozelefutemabo.pdfIn PDF document text
    • http://doxalasi.mywebcommunity.org/gimp_2.10_10_tutorial_deutsch_anfnger.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382782/normal_5feb32da444b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fiforeru.atwebpages.com/mixefamirimaxepedene.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/how_to_put_on_the_full_armor_of_god_daily.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/imagens_tumblr_png.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_off0000db30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB30 5588 bytes
SHA-256: 7455081614410a02f5ebbe8b2732a7a4c1387ff5631e99609c49f99b7910fb7f
font_01_sfnt_off0000ee19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE19 10772 bytes
SHA-256: c37531585c69285cf0da55eb7a9ac5659c7b50144720bd1efd9e0cff7c745590