Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2d263ec9a74741…

MALICIOUS

PDF

67.3 KB Created: 2021-03-25 16:08:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c55746893972280231eea83a4b56b42a SHA-1: e4b403746dc8fa271a69b28c377dacb3b1a27a66 SHA-256: 1b2d263ec9a74741bf608f16dc729093b49b620cce4a1ddb5b869d6c56ddf821
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are typical of lures designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=hp+camo+laptop+amazon
    • https://static.s123-cdn-static.com/uploads/4423696/normal_60008caad4985.pdf
    • https://cdn-cms.f-static.net/uploads/4413019/normal_601a7fd5dad9f.pdf
    • https://jarofuzaduse.weebly.com/uploads/1/3/4/5/134502270/pupeze.pdf
    • https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/kirebekulifez.pdf
    • https://cdn-cms.f-static.net/uploads/4475564/normal_5fd67c6dd910f.pdf
    • https://static.s123-cdn-static.com/uploads/4483586/normal_5fee0d4b41781.pdf
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/wigubu.pdf
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/gibizomexo_kiforuwutisavo_zopopuga_jolijimax.pdf
    • http://kiluzilaw.sportsontheweb.net/bienestar_animal_definicion.pdf
    • https://lidugozomamaxo.weebly.com/uploads/1/3/1/6/131606349/wutejexuzokikoni.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zuwosil/free_music_player_for_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/3bed4bd0-ac5c-4c43-938a-c1634ceb2a07/tajewovibokikamiju.pdf
    • http://fojosotum.myartsonline.com/13666889630.pdf
    • https://s3.amazonaws.com/gosete/fawevotaw.pdf
    • https://s3.amazonaws.com/woxewiwupir/cosy_house_collection_sheets.pdf
    • https://uploads.strikinglycdn.com/files/09764f4a-550e-4273-8109-c22609250fc7/kotefimolejeda.pdf
    • https://s3.amazonaws.com/tawovojo/windows_10_upgrade_manually.pdf
    • https://uploads.strikinglycdn.com/files/5d5a3678-ea48-4121-8b56-a5aedf4aa600/lukegifewosijita.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_off0000cada.bin
5d2539529d4e09b5ee566b20941cdee7b0095fc8f3dde97bdf000d2f0ece0a6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCADA 4816 bytes
font_01_sfnt_off0000db34.bin
36d4e4667f962664884100530461b43d2f07beb30625dea89ce66ad6ef4b5816
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 10828 bytes