Malicious PDF — malware analysis report

Static analysis result for SHA-256 069ddc9db8569626…

MALICIOUS

PDF

83.4 KB Created: 2021-02-19 19:38:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf3a49e1e49a65e5f5ec89b58aab38f9 SHA-1: 4403a6dc7e415923297a7054f4451053de0cc870 SHA-256: 069ddc9db8569626044cbaab13aa500f16f3fc84e03104c57d6e6cebadabc3b5
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, which is likely part of a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious content, potentially for further exploitation.

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://jacksth.ru/wix?keyword=herrin+high+school+address
    • https://cdn.sqhk.co/gefimiwotux/dmpjdLm/20242221996.pdf
    • https://cdn.sqhk.co/fuzokikili/61lgfZ1/laridekutovanilesu.pdf
    • https://cdn.sqhk.co/ruweragi/hVhiIhf/fafuvimofiziwikofaxev.pdf
    • https://cdn.sqhk.co/tisumusef/e5JVbdb/5367001503.pdf
    • https://static.s123-cdn-static.com/uploads/4370319/normal_60010374b9b42.pdf
    • https://static.s123-cdn-static.com/uploads/4390681/normal_5fed39ecc2291.pdf
    • https://cdn.sqhk.co/pixazizaze/aiczhif/universe_space_simulator_merge_gravity_orbits_3d_model.pdf
    • https://cdn.sqhk.co/kelanadu/a8ih3if/5959587946.pdf
    • https://cdn.sqhk.co/soxuvezosapa/dfVMijG/liwuruzivupabat.pdf
    • https://static.s123-cdn-static.com/uploads/4455883/normal_6003490ae8155.pdf
    • https://static.s123-cdn-static.com/uploads/4417818/normal_5ffc3997ce584.pdf
    • https://static.s123-cdn-static.com/uploads/4503524/normal_60053f19808b8.pdf
    • https://cdn.sqhk.co/midubevine/jjjibhg/68322343991.pdf
    • https://cdn.sqhk.co/lapitobexeva/PHaVmhc/dofinofebow.pdf
    • https://static.s123-cdn-static.com/uploads/4426267/normal_5fed32246b377.pdf
    • https://cdn.sqhk.co/zivudasexoni/eJejc42/gitegalot.pdf
    • https://static.s123-cdn-static.com/uploads/4484631/normal_5fe2dda6a8b01.pdf
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5fe6764ae90f9.pdf
    • https://cdn.sqhk.co/nagigureti/hjcojdY/major_mayhem_mod_apk_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off00010a79.bin
f2731d35e7fc41ed13b8e28856737e076bbc2b91c53196e773dced575d122fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A79 5164 bytes
font_01_sfnt_off00011c03.bin
86fba61539800b235b3d403142bb7a344db776a6327348b8d1e59a6dc0cbab42
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C03 10624 bytes