Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b380eb072633e78…

MALICIOUS

PDF

75.1 KB Created: 2021-02-12 20:58:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0307df4fa8f22c8e34af51454950bd67 SHA-1: 8b259c398b8cdc344594a8daeb500ff5a6d4b29e SHA-256: 9b380eb072633e7875a9b7a71e62df92e8f65825eb6904b1d7ccec888faac1c0
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=time+keeper+mitch+albom+pdf In PDF document text
    • http://j3vnci4.xyz/electrical_network_topologyt6otx.pdfIn PDF document text
    • http://noverst.xyz/82417299142xrkp0.pdfIn PDF document text
    • http://rubisteq.online/48525891031wcl8q.pdfIn PDF document text
    • http://pagebake.com/gotitovagurumevadimkgn2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483072/normal_5fe0d6cc0ad9a.pdfIn PDF document text
    • http://nerroba.info/zifobuvixuvaferenujoza5th4p.pdfIn PDF document text
    • http://kisedevobale.22web.org/google_adwords_certification_questions_and_answers_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488817/normal_5fe7900be96b2.pdfIn PDF document text
    • http://ranking-se.com/92799599070k0s1w.pdfIn PDF document text
    • http://classicalnaturally.com/poborujauv9t4.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/kasuwevovog/zamojalewivaxelini.pdfIn PDF document text
    • http://zikepodaw.epizy.com/merriam_webster_dictionary_apk_for_pc.pdfIn PDF document text
    • http://biforobajimebug.epizy.com/18194075897.pdfIn PDF document text
    • http://welerepo.rf.gd/62732829210.pdfIn PDF document text
    • http://gitogopafo.epizy.com/93646719281.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_off0000ea8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8C 5368 bytes
SHA-256: f89f185dbb4df5d97b587f2d19c9cd419f3f6004e3714310a46194bebf5f5f24
font_01_sfnt_off0000fc9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9D 10292 bytes
SHA-256: 28738ba7f8a460aa98aab950ae3f6675a18f1690fcb4253b4ac06cd07e206b0d