Malicious PDF — malware analysis report

Static analysis result for SHA-256 610893684fd95740…

MALICIOUS

PDF

72.5 KB Created: 2021-02-13 15:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c752bcfdf67c69b29da8c12090054fd3 SHA-1: db9b8e10898d870f61b3ecb6fe02bb20e83b5190 SHA-256: 610893684fd95740a6301286e407cb530ebb095d607ec5a28feaaafb8a76e6fd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=bus+rush+hack+mod+apk PDF link annotation
    • http://pixxel.life/jitedenenejozajuvuraks0j1x.pdfIn PDF document text
    • http://mscredit.info/rapisiwootir8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_6009e782dd0de.pdfIn PDF document text
    • http://itayoga.space/synthesis_of_cellulose_acetatejzid0.pdfIn PDF document text
    • http://scm03.ru/picsart_apk_ios_9.3.5ezzrt.pdfIn PDF document text
    • https://sagojuxejuzogug.weebly.com/uploads/1/3/4/5/134598596/8985940.pdfIn PDF document text
    • https://xizoxapuxuraxe.weebly.com/uploads/1/3/4/5/134598133/39ab3f58.pdfIn PDF document text
    • https://mijawogutudegi.weebly.com/uploads/1/3/4/3/134374589/933800.pdfIn PDF document text
    • https://fudisilutopunus.weebly.com/uploads/1/3/1/4/131438012/tawinuvare.pdfIn PDF document text
    • http://thelandofbadideas.com/pukagulwj5bd.pdfIn PDF document text
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/zubosof.pdfIn PDF document text
    • https://puvugemamoj.weebly.com/uploads/1/3/0/9/130969199/9127060.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404741/normal_5ff884d66ca41.pdfIn PDF document text
    • https://lirukasuk.weebly.com/uploads/1/3/0/7/130739032/5075288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393755/normal_600de7715c9d1.pdfIn PDF document text
    • http://zzzmmmmejjj.space/wugibazetotojifqo.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/molak-zalowuvinapelov-woruwejozutubi-tisepinirubut.pdfIn PDF document text
    • http://netzamka.ru/grade_9_math_worksheets_linear_equationstvapb.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/farowug/gosiwizadexebejujabamof.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/bccm_form_10.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_off0000ddeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEB 5392 bytes
SHA-256: 60efc0fd36c77354568696633c6ffed1aadcda80ee9ac1f0f078c853242d7de4
font_01_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 10800 bytes
SHA-256: a0b0e1c63b2a97e9abe821ee2b41500b2ef744ab9d30b282644eacfea7c864a1

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