Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d92febfd00a685…

MALICIOUS

PDF

76.1 KB Created: 2021-03-25 02:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9653a3dcb16a89c2a71b130015b1d650 SHA-1: 59ba84ad045f6e0ca1d440a8830c92ee09604d6b SHA-256: 40d92febfd00a68519ff04790d96267cee0fdc1a5c3bfa1c9daba7b348828ae3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://jacksth.ru/award?keyword=female+pelvis+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487413/normal_605bbe0391ba8.pdfIn PDF document text
    • http://jabekigufu.22web.org/sap_bpc_440_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/ii9hd1q/xatezujikuxevi.pdfIn PDF document text
    • https://cdn.sqhk.co/nodezaneripe/swjehhf/pj_masks_moonlight_heroes_gekko_game.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/1IgzrEb/52077072344.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/ijsJmHF/91115537728.pdfIn PDF document text
    • https://cdn.sqhk.co/gituxogud/2IhhihA/spreadsheet_layout_for_bills.pdfIn PDF document text
    • https://cdn.sqhk.co/xadakede/gLn7haW/stickman_2d_run.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/LhijgvI/84958200100.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426073/normal_5fcdf245d49ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_600c8d991b593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_60138d3c3fc5c.pdfIn PDF document text
    • https://cdn.sqhk.co/nimotixalulo/dtMjaNW/management_of_obesity_guidelines_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_6004a84778fee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://boxogegifenefi.epizy.com/ensayo_con_formato_apa_ejemplo.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/how_to_draw_mathematical_graphs_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/nidepenelazisarugovap.pdfIn PDF document text
    • http://zakagoxufi.epizy.com/happy_birthday_card_template_publisher.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17D 4596 bytes
SHA-256: 3fcf71320a4513c60cdbd7231b02d5bd3b308cc0935f3517d76c24e39a432f26
font_01_sfnt_off0000f11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11F 10700 bytes
SHA-256: 7be08a0929e20393e026f43bacde0518c882fdb5e9daedb64ef16a48a05a3c51
font_02_sfnt_off000115b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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