Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee25a800d64cbcb…

MALICIOUS

PDF

74.3 KB Created: 2021-03-14 13:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 84f36a4526d480701bb2ffb622d9003d SHA-1: e1b621e66739e1ba9495e7f84740ab6facdbed82 SHA-256: 0ee25a800d64cbcbd33e339b0e947c04a48fdd2e03b1d8745ac606ea286403f8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/123?utm_term=chatting+games+android PDF link annotation
    • http://xofelivigavas.mywebcommunity.org/puzad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5ffdfe9c03003.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402517/normal_5fc6663a03b5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368506/normal_6008e4bf076f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_6027fd76cd86c.pdfIn PDF document text
    • http://widonatozeg.mypressonline.com/cctv_camera_circuit_diagram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465127/normal_603d5ca323b9b.pdfIn PDF document text
    • http://siwupezomejen.getenjoyment.net/12773803523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fe724d8de20f.pdfIn PDF document text
    • http://wirodapupoz.iblogger.org/quantity_surveyor_report_benefit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5fe75a98af29e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f238abdf-92e3-4651-90df-65b6e8a648d9.filesusr.com/ugd/99965f_093f8834239a4ed7b502ff44f4f85aa7.pdf?index=trueIn PDF document text
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_e1b8ac6964a145489c024068446df7a4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aeeb5a9-3def-4fb4-b3c2-f55ce986e2fb/manual_de_organizacion_y_funciones_essalud_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca5f5334-9e75-49d7-9076-988d38319d90/zedabegagatumutotik.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_3ebdbc065a4b4730a56d1b8b5bc142aa.pdf?index=trueIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/crafting_and_executing_strategy_19e.pdfIn PDF document text
    • http://bubobebetoju.rf.gd/sewexobejilu.pdfIn PDF document text
    • http://seroroxunabolu.onlinewebshop.net/sentry_safe_key_replacement_3f2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db11a1b0-c9ad-4132-9d5f-a5a8fda36691/85335171207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcf0817b-97d1-4492-b476-6e1c17ad6a09/is_it_dangerous_if_your_pet_dog_bites_you.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4011eb4f-c327-41e7-bc64-d04e21abc73d/44082340825.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_off0000e727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE727 5112 bytes
SHA-256: bb87ae2746f6ba4708d87a23028afc8348cc033641b3f52b07d5b074c974c5b8
font_01_sfnt_off0000f856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF856 10476 bytes
SHA-256: 3ecf6ead9706809c8499efe19be21c6beb0d2d31f87fd27250c256319505567f

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