Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c20bb1c29cbf6b3…

MALICIOUS

PDF

76.8 KB Created: 2021-03-06 21:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c74a70f303cc0743436bda36b789ff2 SHA-1: e6302aef7e615165cd233b22f0ac4bd8e3a29fdb SHA-256: 6c20bb1c29cbf6b347ada70d444c3c4b8f509cd1c9e6ab6986e56f6616f8142c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the presence of the external URI suggests the document's purpose is to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/123?utm_term=how+to+make+a+wooden+finger+labyrinth
    • http://motorutovibipe.sportsontheweb.net/26979771856.pdf
    • http://jadusugogawal.iblogger.org/bbc_bitesize_ks3_ict_spreadsheets_revision_1.pdf
    • http://mutinujevax.22web.org/mirujude.pdf
    • http://radulukolataleb.iblogger.org/maths_text_book_8th_class_cbse.pdf
    • http://gapilojazixo.getenjoyment.net/howard_miller_grandfather_clock_adjustment.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kojajopi.epizy.com/407725794.pdf
    • https://s3.amazonaws.com/vukujidor/mandolin_for_dummies_book.pdf
    • http://zabukek.rf.gd/63969148134.pdf
    • http://tovajukoxeboder.epizy.com/number_0_worksheets_for_pre_k.pdf
    • https://uploads.strikinglycdn.com/files/89aaf6ce-f10a-4648-a7ea-e5d57a4748a0/damubenaluzasofeg.pdf
    • http://wedusumefixikeg.rf.gd/inflected_endings_worksheets_4th_grade.pdf
    • http://nabulegewuwal.myartsonline.com/what_are_the_36_spiritual_principles_of_aa.pdf
    • https://s3.amazonaws.com/jobavo/15002828202.pdf
    • http://jabizamok.epizy.com/how_to_do_vif_in_r.pdf
    • https://uploads.strikinglycdn.com/files/4824a4e1-6046-4bef-8129-be7089e3fac5/28313587503.pdf
    • https://s3.amazonaws.com/gavobawum/evolution_of_cell_communication.pdf
    • https://86b7bb9a-6a0b-496c-a062-e8aa60c365d0.filesusr.com/ugd/dcf311_8f0b5f67f5f242f0bc16844e1053b7aa.pdf?index=true
    • https://s3.amazonaws.com/negonanopix/gepobutezi.pdf
    • http://lupozefobu.rf.gd/silorapimewufijerogo.pdf
    • https://uploads.strikinglycdn.com/files/b2310792-8aad-4bd5-aee1-88028de18ad4/12560650449.pdf
    • https://cf075d60-af7c-4c71-a16c-5c8c125a9bb7.filesusr.com/ugd/cc03df_f87c1b8ae3ab443b83df6f613caa99cd.pdf?index=true
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_a8996f962f454bc3b1e73b19f35a66a7.pdf?index=true
    • https://s3.amazonaws.com/taturi/carrom_disc_pool_mod_apk_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec1d.bin
5e26297f15cf354e9cc0818a145eae0d730c251ffd0ddef5482d5664efe1b0a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1D 5504 bytes
font_01_sfnt_off0000fec0.bin
3543914a33817a1870f38569acfe705867e75a51d344ab38a6112bb54615c4e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC0 10904 bytes

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