Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df2d4d275060227…

MALICIOUS

PDF

70.7 KB Created: 2021-03-24 17:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: f57730c9e78792337f98b0b86bfbb939 SHA-1: 0b23457abd63a9372c019025695d94d0f13d8344 SHA-256: 1df2d4d2750602276c42d72b03b21f8b7b00a986245b8425a09bb3975c792b1a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant portion pointing to disposable hosting and exhibiting link farm characteristics. One prominent URL, 'https://mezovuvuw.ru/wix?keyword=ragdoll+2+hacked', is flagged as unknown and is likely the primary malicious destination. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/wix?keyword=ragdoll+2+hacked PDF link annotation
    • http://zipafaxelati.sportsontheweb.net/pdf_to_word_converter_arabic_free_download.pdfIn PDF document text
    • http://damvglaz0.xyz/38430687285qoih4.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/fabijasajaduh8l3f.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/ZvIJhia/skylink_live_tv_sk_apple.pdfIn PDF document text
    • http://makedctl.site/77404976424zk3p4.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/IUvxhc8/homemade_hamburger_patties_without_worcestershire_sauce.pdfIn PDF document text
    • http://ludesajezopaju.medianewsonline.com/asme_b16._34_latest_edition.pdfIn PDF document text
    • http://ejqy.com/midupokoqsoa7.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/jeep_grand_cherokee_diesel_problems_2014.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
    • https://f8b2de7a-6012-4721-b8f1-df5267d6bb95.filesusr.com/ugd/8ebb60_a1fdf7d9b4b647059bf085962e7d4e4e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/is_love_real_quotes.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_d47062f7d52447b4a95f276a1fe2a6ef.pdf?index=trueIn PDF document text
    • http://rixibedi.onlinewebshop.net/toro_22_recycler_lawn_mower_oil_type.pdfIn PDF document text
    • http://gazezubutajon.rf.gd/fiwumaresopik.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/83005675589.pdfIn PDF document text
    • http://bumumewevebav.epizy.com/66456483870.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_729eef89f4c843a68974155487dd2057.pdf?index=trueIn 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_off0000ccfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFA 4684 bytes
SHA-256: 80dd0b74be82e0cd944496d540033e91f9502b1646b0d336c06458472e93408f
font_01_sfnt_off0000dce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE7 10252 bytes
SHA-256: 48d07af8dacbb23186d9db8e7ea0ef1a10181d6a46aa46f2ad5c8123de239145
font_02_sfnt_off0000ffff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFF 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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