Malicious PDF — malware analysis report

Static analysis result for SHA-256 0217ff29f62d8985…

MALICIOUS

PDF

74.1 KB Created: 2021-04-01 00:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4e442d2257a8545b3f93be211e35c8d1 SHA-1: c65df2ea2a87239477184d4a7b2ec654ef9172c5 SHA-256: 0217ff29f62d8985ad40765fd15d448f27a2becf703ec2de7b285c9aefb08c24
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though heavily obfuscated, appears to contain keywords related to educational material, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=geometric+transformations+worksheets+high+school PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4424696/normal_6007c2e4f09d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366014/normal_5fc8727c0e6ac.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/i2rhjib/ziwakitew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451369/normal_5fda95a219cd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404965/normal_6057974ab69ab.pdfIn PDF document text
    • https://cdn.sqhk.co/kisasizaro/CVghihJ/master_assassin_5e.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/hO7ggea/littlest_pet_shop_your_world_hack.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/xavizibibez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5fd0e588ed847.pdfIn PDF document text
    • https://cdn.sqhk.co/neviragar/EhgV4jf/geduxojuxotakiwer.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/djcZhdx/spaceteam_review_ios_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/foAgdhe/pozirumidonasemof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486765/normal_5fee8a372d674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488569/normal_605c0b321fbaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_a2c09b40234542c1a23c0ebc633837d6.pdf?index=trueIn PDF document text
    • https://80c8fd16-4cf8-4f9f-b52b-d6c956df8f3b.filesusr.com/ugd/1a94e8_1f5d82f1b93d4830a62c520f3410ff07.pdf?index=trueIn PDF document text
    • http://dapufojutujat.atwebpages.com/what_is_grounded_theory_used_for.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD802 5268 bytes
SHA-256: 269839f1ed7d0e9dc7d11dc04644d194872db981bf3f25c611375bd3f1a4d1d3
font_01_sfnt_off0000e9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D5 10264 bytes
SHA-256: d1a90e96a492369d1e4a87c28bdd13f8ef231fa30d91301ebd17c91dbc5e60e3
font_02_sfnt_off00010ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCD 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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