Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebee4c09c7a7793b…

MALICIOUS

PDF

68.2 KB Created: 2021-01-27 19:02:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 78b9b316e6304194edce4844c36c2f74 SHA-1: 758d8bf9b7b8954e9baabd37240cbf6ac2b00897 SHA-256: ebee4c09c7a7793bffd92e43a9360b6f19c604b6c36e97ed8c587d6f682f93b0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple external URIs, many of which are associated with suspicious domains, suggests the document is part of a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a social engineering attack aiming to trick users into downloading further malicious content.

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/123?utm_term=jenn+air+expressions+oven+manual PDF link annotation
    • http://insta-sale.site/rsoudre_un_systme_dquation_non_linaire_python7wybk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500186/normal_5fdc3838ea289.pdfIn PDF document text
    • http://bt-management.website/age_of_empires_2_steam_chartskke4z.pdfIn PDF document text
    • http://24goodstore.site/research_assistant_cvuoqs2.pdfIn PDF document text
    • http://akmurzina.com/setuwurakikowafesuviwsej6w.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/jgzzgex/last_craft_survival_mod_apk_unlimited_money.pdfIn PDF document text
    • http://paktum.pro/my_lips_are_burning_and_swollenzq6ld.pdfIn PDF document text
    • http://drnextact.xyz/movistar_colombia_telefonosb3l8b.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/clicker_racing_mod_apkte6q4.pdfIn PDF document text
    • http://milanomodaitaly.site/43195878734ltgf2.pdfIn PDF document text
    • https://cdn.sqhk.co/xederebat/Rngfij9/download_clash_of_clans_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/bBAhaOu/stunt_bike_freestyle_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/SjfFIie/xoxotuvaxekakakeliniluxus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/sql_format_function_month.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/aviso_wealth_email_format.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/nomao_camera_app_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/gif_bendera_indonesia.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD049 5084 bytes
SHA-256: 4410e85b5aab160dcdcb39efc6a474c1fc0351b2dca45165624890af3f1d5356
font_01_sfnt_off0000e188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE188 10040 bytes
SHA-256: 51799cc5596770ec8bfc6e0a1c0bbf146dc583e7dd6f1130cf1db589bbff4fe2

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