Malicious PDF — malware analysis report

Static analysis result for SHA-256 629384e902f26ee8…

MALICIOUS

PDF

72.6 KB Created: 2021-03-08 20:21:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 4be0dcab9218ec7c5547f87c7d71d07e SHA-1: 829d006fa80544ce3da183b9f5dc07c603e5cb53 SHA-256: 629384e902f26ee8875edd8a24606126e3c52114f9c50ad79274e10b55ab2c22
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a '1995 yamaha kodiak 400 4x4 oil change' and embeds a URL pointing to a suspicious domain. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=1995+yamaha+kodiak+400+4x4+oil+change PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479237/normal_601da933ccade.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/zjijfzY/hot_chocolate_pudding_recipe_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/rebiguta/o5iaOfg/venom_angry_crashy_rush_online_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/delopomixaba/p3jbgjw/pixel_art_creator_roblox_sans.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/7WLXMhg/76763877770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487399/normal_5fd150aab243f.pdfIn PDF document text
    • http://eurofamily.pro/tuvonapizetabi4k4w9.pdfIn PDF document text
    • https://cdn.sqhk.co/leruwexikud/gghcrZ6/talking_tom_angela_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5fd0a061982cc.pdfIn PDF document text
    • http://copyright-notice-ig.com/how_to_answer_why_do_you_want_this_job_question_in_an_interview823jv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411481/normal_5feb1d9fe4e9c.pdfIn PDF document text
    • https://cdn.sqhk.co/zalenemu/jei8chb/budosurerizifogezasusafu.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvevalor/hjib358/64834720950.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370533/normal_5fcad746b302f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8caa4f37-df42-4e95-b7dd-ae284257776e/bawewawos.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/niwurejati.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/are_samsung_tvs_better_than_sony.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/nivawix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b746e822-6e1b-49ad-af21-ed63ff0befaa/how_to_use_neat_scanner_with_quickbooks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a660ab-b3f0-4552-91e7-ffdd01f2a63a/96979258799.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/cvc_worksheets_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1630879-20cf-40e4-95a1-23b601baa52d/lokuwulu.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_off0000dfeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEB 5780 bytes
SHA-256: c2fb685ed2bf8d89d14465291cf5e887eb30ceb4850dfd9579586694a0efa9e9
font_01_sfnt_off0000f393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF393 9804 bytes
SHA-256: 0b1e52c50bfce9ca9f0fd17bad21440366b106589d11e6af0c920bf5c0bdb208

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