Malicious PDF — malware analysis report

Static analysis result for SHA-256 225126fdaac6f0e3…

MALICIOUS

PDF

72.7 KB Created: 2021-02-09 18:30:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 16b9e067cfe255bfff247ec6a5976045 SHA-1: e5cb42ba55eaa6f64c77633f46484b4d58fefa78 SHA-256: 225126fdaac6f0e3aeaf14c25c055797283c92d91967bc6276dd1e01d9ffcc18
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/aws?utm_term=huawei+p10+plus+android+9+g%25C3%25BCncelleme PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389603/normal_5ff5a75b44ea8.pdfIn PDF document text
    • http://choosenews.space/9784953322urjzs.pdfIn PDF document text
    • https://nafizanoride.weebly.com/uploads/1/3/4/5/134596231/9230551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465018/normal_601f2d511894b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459621/normal_5feb76c9e34c8.pdfIn PDF document text
    • https://gimogelego.weebly.com/uploads/1/3/4/6/134601730/gixivixat.pdfIn PDF document text
    • https://pimidunobesuxig.weebly.com/uploads/1/3/0/9/130970022/zovusivipuxomunifoju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424026/normal_5ff25412ae8e9.pdfIn PDF document text
    • http://katermore.ru/46598481829052rn.pdfIn PDF document text
    • https://timurikamaz.weebly.com/uploads/1/3/1/4/131406182/tanilorakojope_pupoluborezaxub.pdfIn PDF document text
    • https://jovegubegatok.weebly.com/uploads/1/3/5/3/135318826/1e01e040a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sikofus.epizy.com/atrial_fibrillation_treatment_guidelines_2018.pdfIn PDF document text
    • http://kakununul.epizy.com/school_newspaper_layout_template_free.pdfIn PDF document text
    • http://rerodijunenema.epizy.com/alloy_20_chemical_composition.pdfIn PDF document text
    • http://kiluwuw.epizy.com/accounting_cv_template_word.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_off0000dc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC13 5916 bytes
SHA-256: ad652396ba2d423c20a98a05f8df7777bf3fbec2e318720f9bca870f761778f6
font_01_sfnt_off0000f005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF005 10540 bytes
SHA-256: 0766507ba6a1af829adbba7ee252e90902142625cd9f157479f62911856e5a5a