Malicious PDF — malware analysis report

Static analysis result for SHA-256 2296bda5d6913a05…

MALICIOUS

PDF

101.7 KB Created: 2021-03-04 19:36:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4987bde6b08f8f4ffc35ddc128ac353 SHA-1: d28664f8228004e655d999aac11978ba9440af2b SHA-256: 2296bda5d6913a0556bca8cf8f7b6246f782530e804c10fcb988ac154c335259
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a common query about dachshund weight. This suggests a phishing or social engineering attack aimed at tricking the user into visiting a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://jumiwimov.ru/123?utm_term=how+much+should+a+miniature+dachshund+weigh+at+4+months
    • https://cdn-cms.f-static.net/uploads/4401546/normal_603c2f47886bd.pdf
    • https://cdn-cms.f-static.net/uploads/4459062/normal_6026600e5d9e2.pdf
    • http://gisowutuxa.22web.org/emoji_stickers_images.pdf
    • http://laguduzimunek.22web.org/66553178422.pdf
    • https://cdn-cms.f-static.net/uploads/4366959/normal_6032afe72c418.pdf
    • https://cdn-cms.f-static.net/uploads/4382621/normal_5fd62a66977cb.pdf
    • https://static.s123-cdn-static.com/uploads/4375894/normal_5feeb81e2d1c3.pdf
    • https://cdn-cms.f-static.net/uploads/4464521/normal_5fdbffde8cf10.pdf
    • https://cdn-cms.f-static.net/uploads/4495681/normal_603d00eee648f.pdf
    • https://cdn-cms.f-static.net/uploads/4492278/normal_60406104b95cd.pdf
    • https://cdn-cms.f-static.net/uploads/4444114/normal_6013b0beab591.pdf
    • http://nulonelam.66ghz.com/draw_parallel_and_perpendicular_lines_worksheet.pdf
    • https://cdn-cms.f-static.net/uploads/4447250/normal_603653d3bca8f.pdf
    • http://tazikuruwuwozu.22web.org/famous_classical_piano_sheet_music_free.pdf
    • https://cdn-cms.f-static.net/uploads/4423471/normal_5fd7ef06df7e1.pdf
    • https://cdn-cms.f-static.net/uploads/4370543/normal_6028f391c44e6.pdf
    • https://cdn-cms.f-static.net/uploads/4418972/normal_601d914bbb4d8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7ce6f244-95a9-4265-826d-cd05469dd29e/gixajogubimosinerelezun.pdf
    • https://uploads.strikinglycdn.com/files/eac2b647-c13b-4fc4-88c4-c16eb8b9f652/mopafirotegijutiteno.pdf
    • http://koraxirimaxodet.epizy.com/renal_transplant_treatment_guidelines.pdf
    • http://zozafiromilofin.epizy.com/free_autocad_2007_for_windows_10.pdf
    • http://rezekov.rf.gd/katoruzesivanos.pdf
    • https://uploads.strikinglycdn.com/files/753aa45f-7a22-455a-9858-52e34e8a641a/vocabulary_builder_activity_networks_answer_key_ancient_egypt_and_kush.pdf
    • http://vitipazapabixu.epizy.com/call_of_duty_mobile_game_size.pdf
    • http://nesitojogosew.epizy.com/bojamifafokisu.pdf
    • http://wekameti.rf.gd/61583473018.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_off00014f65.bin
12c94347ae459b4a20a5e3290643dc0c91c1869965ba68a26d65d611f3d8e55f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F65 5492 bytes
font_01_sfnt_off000161ff.bin
39a15f84ab53a4ab66323e67adcac4d3f4527dae03a4e6e6a307cedab4699f80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x161FF 11376 bytes

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