Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc002333a8a272b…

MALICIOUS

PDF

75.5 KB Created: 2021-03-15 01:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04ec9c29b66e460c25d0581fd2f7246d SHA-1: 7ee3a4fd9d22d751865aa08e7aa7e12bb8c8b50d SHA-256: 5cc002333a8a272b124e2618165d563333d43ab13cbd2280fe046f00f32aa7a0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead users to phishing sites or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/wb?keyword=how%20to%20forgive%20the%20unforgivable%20quotes PDF link annotation
    • https://cdn.sqhk.co/rarukaboz/LIijghg/images_steven_universe_pearl.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/a8jgMiI/dictature_synonyme_en_francais.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459185/normal_5fea2eef861a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489615/normal_5fe30b1409dd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387037/normal_601e273aa1c67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454541/normal_603ff2c8e60ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae1c8a9b-61e2-42ba-b20f-458b167f20f2/88496970046.pdfIn PDF document text
    • https://3633ae4e-9acc-45df-885e-1bfa1481cb44.filesusr.com/ugd/e73054_05d4e15b0d3c4dd8bb81e33f8cc1a2f5.pdf?index=trueIn PDF document text
    • https://b84c3727-5d5a-4c5d-9d5d-21cac87b3a69.filesusr.com/ugd/fdd6c2_78fdcbf6d3d34eb8ae8517a14845bf35.pdf?index=trueIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_0e0b69796d2341a6b83330eea26e56fa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/20c362cf-2d1b-4373-ae1b-c596bf9ff3c0/rukesuvuxojinekaxaluje.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/81123397741.pdfIn PDF document text
    • https://488c2ff9-9ff4-499e-8f11-525115e20b22.filesusr.com/ugd/8aba0c_0526b2d52242459687af5cf82d3dfc79.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zikeko/aaranya_kaandam_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/bosobinabodijilab.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/medical_laboratory_technology_methods_and_interpretations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d09cdd-7b9c-4811-a9d0-98dc45392bf5/berserk_manga_ending_discussion.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_5122ca6de88641a583e56c7a53e8bfd2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fexuror/brazilian_blowout_shampoo_formaldehyde.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/terraria_cheats_android_free.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_off0000e7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AC 5408 bytes
SHA-256: c1ff47b274432d4f8c9ee73b5afbfb185ff649c2db3bbe602c78b1278f15631a
font_01_sfnt_off0000fa22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA22 11164 bytes
SHA-256: ec6764f88f55a86db1f6b20eeba0ed754ff6862e60ef197cdde5822e8fa1ed77

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