Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc766176a12a0594…

MALICIOUS

PDF

87.4 KB Created: 2021-05-09 15:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c621f0d15649be7c26ba458a9547656 SHA-1: 571e45cc03cc71ed70bda9c434fc72e28233f0bd SHA-256: cc766176a12a0594fa3791970f44b15d7fdab447091037374a58aa319428aeb9
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains text related to a 'Walmart photo blanket coupon code', suggesting a phishing or scam lure. An external URI pointing to 'seumenha.ru' was also extracted, likely serving as the destination for the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=walmart+photo+blanket+coupon+code
    • https://cdn-cms.f-static.net/uploads/4487399/normal_60469dbbf2383.pdf
    • https://cdn.sqhk.co/famuxina/Licb7ih/girisekosekamefotekenidi.pdf
    • https://cdn.sqhk.co/rofezurit/8gyhhhG/39491625632.pdf
    • https://cdn.sqhk.co/wepunajexiju/ejjlvgP/lokodefamami.pdf
    • https://static.s123-cdn-static.com/uploads/4500911/normal_60037e161caeb.pdf
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fcfa543b4b95.pdf
    • http://timevakakegiku.iblogger.org/how_does_an_electric_egg_cooker_work.pdf
    • https://cdn.sqhk.co/wepunajexiju/0kIijhc/rexatesoti.pdf
    • https://cdn-cms.f-static.net/uploads/4414176/normal_5fdb51e77be88.pdf
    • https://cdn-cms.f-static.net/uploads/4530846/normal_600ed49e4bdc8.pdf
    • https://cdn.sqhk.co/kanemili/Yijhajb/try_not_to_laugh_challenge_extra_hard_clean.pdf
    • https://cdn.sqhk.co/baxorurifina/icPPek2/1946211975.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nazekisigiduz/landing_page_builder_free_templates.pdf
    • https://s3.amazonaws.com/tonisefoteka/67686167575.pdf
    • https://uploads.strikinglycdn.com/files/aa1cb020-f00b-4644-962c-8648c745ed0d/a_midsummer_nights_dream_act_2_scene_1_short_summary.pdf
    • https://uploads.strikinglycdn.com/files/4a783336-aa50-4fc2-b056-0e6d1c35e758/1984_reading_questions_part_1_ch_5-7.pdf
    • https://s3.amazonaws.com/tunenijexe/definicion_de_ansiolitico.pdf
    • http://nokolul.epizy.com/agar._io_apk.pdf
    • https://uploads.strikinglycdn.com/files/404543ed-ee40-46d0-94b1-8c462d5f353c/how_to_enter_hp_bios.pdf
    • https://s3.amazonaws.com/gowupuzokowuxes/pububedet.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_off000115d9.bin
ca3b9b32e21e91eb66771ea1bf2554a1971a549a98ef3ba0eaf43ec7f69a8b8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x115D9 5352 bytes
font_01_sfnt_off000127e4.bin
77defdbdd78e00b3ce6222bb746811d46de7adfdf9767ba8681f2d84c1479ca1
pdf-font-stream PDF embedded font (sfnt) at offset 0x127E4 11556 bytes