Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ceb3e0e94f65ac…

MALICIOUS

PDF

85.2 KB Created: 2021-03-14 21:20:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a59ad243299766fde1373896b6c05d34 SHA-1: 563ab66e58ba78815be945dd8132b8a9313b1139 SHA-256: c0ceb3e0e94f65ac450614499751ba128c29db5045b1ae9e3a266bcca5a3c705
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to external resources, suggesting it's designed to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/123?utm_term=angular+5+website+template+free
    • http://jizefuli.22web.org/72064655031.pdf
    • http://mebovedu.getenjoyment.net/basic_algebra_practice.pdf
    • https://static.s123-cdn-static.com/uploads/4448556/normal_60046a8ddba42.pdf
    • http://gopusoduj.mygamesonline.org/how_to_outline_a_term_paper.pdf
    • https://fubomagasikeka.weebly.com/uploads/1/3/4/4/134474343/gepubat.pdf
    • https://rasiguxi.weebly.com/uploads/1/3/5/3/135314707/1119483.pdf
    • http://palubofapejuraw.mywebcommunity.org/indian_instant_pot_cookbook_free_download.pdf
    • https://fozafilamo.weebly.com/uploads/1/3/4/3/134314768/dowufuzawu.pdf
    • https://cdn-cms.f-static.net/uploads/4476443/normal_5fd5fb6f0ff69.pdf
    • https://sokarapojuler.weebly.com/uploads/1/3/1/1/131163736/fexipasajekexu.pdf
    • http://jerimujolegem.medianewsonline.com/84461042620.pdf
    • https://static.s123-cdn-static.com/uploads/4371005/normal_6006401e720ae.pdf
    • http://kaxavetaxudu.mywebcommunity.org/22999693420.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gaxodusipif.epizy.com/72545123097.pdf
    • http://femolejo.epizy.com/medication_adherence_report_scale_mars.pdf
    • https://uploads.strikinglycdn.com/files/411c3403-9285-4e74-8df7-557cf2006e94/54295294005.pdf
    • https://uploads.strikinglycdn.com/files/54f2b631-59f6-4cd0-a263-739dc8439f20/computer_science_books_in_urdu_free_download.pdf
    • http://mumawanif.rf.gd/37773002842.pdf
    • http://batilirilalu.rf.gd/goal_setting_sheets_for_athletes.pdf
    • https://uploads.strikinglycdn.com/files/818cbcd8-fc96-4ec8-ab3a-e7b7a224772c/formula_to_work_out_cylinder_volume.pdf
    • http://birijigasexow.epizy.com/weather_report_in_goa_now.pdf
    • https://uploads.strikinglycdn.com/files/bce19263-be52-433c-8d67-059351af9c7b/what_junk_foods_are_gluten_free.pdf
    • http://xamipekuxedatif.rf.gd/48820886296.pdf
    • http://bexituxupogetav.rf.gd/duterojus.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_off00011218.bin
dff392e0af2ffa4d1d9f3c695560f4ba14876b8e64e30128beb0e8341889ce6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11218 5564 bytes
font_01_sfnt_off00012504.bin
b4cbe800a64a9d0c38558307118c092951c216c748a49371655b41bd5c7bb62d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12504 10168 bytes

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