Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e103723397387f…

MALICIOUS

PDF

70.9 KB Created: 2021-04-05 08:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f69bca34146e230ce5b905aac0ed5f70 SHA-1: 346ede6aaefcf1e5cc9f38cb400eb25d7bd4d1d6 SHA-256: 06e103723397387f445f0384873c35b01e984604ce0d6345784fc7ddd6524001
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that are likely part of a phishing or malware distribution scheme, masquerading as information related to IELTS academic writing. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest the document is designed to lead the user to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/award?keyword=ielts+academic+writing+tasks+pdf
    • http://kajuzumanaz.sportsontheweb.net/low_back_pain_exercises.pdf
    • https://cdn.sqhk.co/perokokamosa/hgSheVf/jadojilozikopusire.pdf
    • https://cdn-cms.f-static.net/uploads/4503578/normal_603a275deabca.pdf
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/06cfa3300b48a.pdf
    • http://zeruxejobimal.mywebcommunity.org/6_claves_para_aprender_ingls_gratis.pdf
    • https://cdn-cms.f-static.net/uploads/4450139/normal_604471097ac73.pdf
    • https://limotesatax.weebly.com/uploads/1/3/1/8/131871768/6869674.pdf
    • https://cdn-cms.f-static.net/uploads/4480182/normal_600a814f28104.pdf
    • https://cdn.sqhk.co/jiluputumusi/jjdBhcT/best_of_vegas._com_reviews.pdf
    • https://merirano.weebly.com/uploads/1/3/2/7/132710628/149429.pdf
    • http://silekutum.medianewsonline.com/vipevugajusixujogogipaxo.pdf
    • https://cdn-cms.f-static.net/uploads/4454281/normal_6010f03796e99.pdf
    • https://gasimela.weebly.com/uploads/1/3/1/3/131398285/gigunos.pdf
    • https://cdn-cms.f-static.net/uploads/4420766/normal_5fe6eb0027620.pdf
    • https://cdn.sqhk.co/xekutenupi/id2hfJF/66119483033.pdf
    • http://wubufusimeveve.22web.org/56464575629.pdf
    • http://giwosesupalu.medianewsonline.com/denekogaperesejekonuwite.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bezopiwuzalobit.rf.gd/graphic_designer_salary_per_hour_in_california.pdf
    • http://pegagudebamu.epizy.com/ecg_interpretation_made_easy_apk.pdf
    • https://48cc712b-de5e-493e-a198-f8962849e22b.filesusr.com/ugd/d2751c_5498a5f987f44f7f97cd1ede08fc8a96.pdf?index=true
    • http://rojanesifilagu.myartsonline.com/jumprope_grades_student_login.pdf
    • https://1c514d3f-4aca-4c14-a2cc-94ef866bc6c7.filesusr.com/ugd/860217_09fa4d2e3b6a4db5b874627bef3d49e9.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e35e.bin
1e2d8412b5b907f1e4ab1d717dbba60b8a56e4b999a9d309c0e86c11c9ffbab8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE35E 5568 bytes
font_01_sfnt_off0000f64d.bin
852c4a7af95d273e3ca4af16f12d03fbe076d76cd41daafb9aa58fa8c1718d74
pdf-font-stream PDF embedded font (sfnt) at offset 0xF64D 11112 bytes