Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d4ffaf17dd8f6f…

MALICIOUS

PDF

66.0 KB Created: 2021-02-23 12:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0b28e0dee3648e0ec80b9b599341e92d SHA-1: 2ebd3bc297a1e3eb7fa70d9adaf9c01fc9a948c3 SHA-256: 25d4ffaf17dd8f6f18084598ad8bfcef0131c3ec000b08a3ad83e46c90b43500
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=how+we+learn+pdf+free+download PDF link annotation
    • https://tuganokume.weebly.com/uploads/1/3/1/4/131452880/6bc72ca620aed.pdfIn PDF document text
    • https://rizogogitire.weebly.com/uploads/1/3/5/3/135323834/wikivalo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5ff4f8ad49e02.pdfIn PDF document text
    • http://thesimplycompleteseries.com/utah_state_child_care_licensing_rulespwfcv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486552/normal_60198d953170d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389581/normal_6007af1b10275.pdfIn PDF document text
    • http://50offshop.info/13306219635xdkfz.pdfIn PDF document text
    • http://remont-kholodilnikov.website/gexuxejusironedn9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407664/normal_6011c263bd0de.pdfIn PDF document text
    • http://probkin34.xyz/puzimogenafejobevio0nmf.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/1573450.pdfIn PDF document text
    • http://shoop-ff.ru/763257833809vtpm.pdfIn PDF document text
    • https://lopufofogepuxal.weebly.com/uploads/1/3/4/6/134695200/zizujuvawiwil.pdfIn PDF document text
    • http://opssmall.space/kesisaximiwa95zf.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/jadere/52342640410.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/exercice_appareillage_electrique.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/pataal_bhairavi_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/foothill_ranch_restaurant_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/raguxi.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_off0000c846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC846 4908 bytes
SHA-256: 484fa71e6b0378a5553dd36ffc0bf3a31701ad3c74498b7174feca10cc3a5b11
font_01_sfnt_off0000d918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD918 9964 bytes
SHA-256: b4871584a74272c1564754fbd6cf102cfe64f5f4b8aa64766a25c4ff9e555c69