Malicious PDF — malware analysis report

Static analysis result for SHA-256 255a29e0998bdbfc…

MALICIOUS

PDF

69.0 KB Created: 2021-03-02 07:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 995f2cbad216d6232e9f2f13eec6d14e SHA-1: 446e78d7d44115e0165ec01d746e6b2b3f72352b SHA-256: 255a29e0998bdbfcf1c0a5bf621e8ff5c8284791ec109cd3e5bc401cc039c3c4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/award?keyword=a+river+runs+through+it+streaming PDF link annotation
    • http://trening-ekaterinodar.ru/how_to_find_the_discontinuity_of_a_piecewise_functionzq5jh.pdfIn PDF document text
    • https://kimiligemapi.weebly.com/uploads/1/3/4/3/134343210/vonexipevanoxe.pdfIn PDF document text
    • https://tiletemilowa.weebly.com/uploads/1/3/2/7/132710791/jubuvezuzupet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_5fd254c4b32b3.pdfIn PDF document text
    • http://filemarker.store/shrek_cartoon_full_movie_free952ob.pdfIn PDF document text
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/2848586.pdfIn PDF document text
    • http://you-bestshop.xyz/bilejepurunun0m24a.pdfIn PDF document text
    • http://levelupguild.com/renal_abscess_treatmentz5gx6.pdfIn PDF document text
    • http://damvglaz2.xyz/all_in_1_hdd_docking_875_user_manualpt3v8.pdfIn PDF document text
    • http://eushopvmn.site/98070602147i39g3.pdfIn PDF document text
    • http://kayikciakademi.com/36791723244aqx5s.pdfIn PDF document text
    • http://mangalvpodarok.ru/how_to_turn_on_simplehuman_soap_dispenserlo71y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5feb65eebd3b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384296/normal_6027d6c1a2f37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407087/normal_6017340253227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375073/normal_603b4c1345ccf.pdfIn PDF document text
    • http://useplafond.xyz/parufovlun6.pdfIn PDF document text
    • http://robertferrell.net/1453509131cee7b.pdfIn PDF document text
    • https://wegodirudime.weebly.com/uploads/1/3/2/7/132740829/tozelif-kojal.pdfIn PDF document text
    • http://trudogoliya.online/how_do_i_put_my_vtech_phone_on_speakeroofyu.pdfIn PDF document text
    • http://ukranews.site/dr_brown_microwave_sterilizer_reviewsqzaa2.pdfIn PDF document text
    • http://clobuss.ru/sun_news_live_today_weather_report2fmon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FC 5116 bytes
SHA-256: a8aec0e10162067ee45674977673d6d01674e64822fa38e76cc7929ecf0906e6
font_01_sfnt_off0000e23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23E 10624 bytes
SHA-256: 7cadf394703185b20c9471d1d1c128391327b71941de99f6d8654dfec605b64a

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