Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8fe364f1771f273…

MALICIOUS

PDF

39.7 KB Created: 2020-10-31 00:01:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ccb324f48e4028ee8fdf192f21a458dc SHA-1: 84df63dc5e2a108698972e87cb7f46ec078ff59e SHA-256: a8fe364f1771f27371a51ac4287e0978eb3ce4bf9abcea1836028e85aead0271
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/strik?keyword=the+thinning+2+google+drive' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to lure the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?keyword=the+thinning+2+google+drive In PDF document text
    • https://defifipak.weebly.com/uploads/1/3/4/4/134442047/wigebadidulok_savegeb_fusefoti_pegoparo.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/942503.pdfIn PDF document text
    • https://ziroluberunoreg.weebly.com/uploads/1/3/4/4/134456507/363158.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/9628834.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/baxadelefofibuz/nova_killer_quake_video_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15fee635-3a1a-4dad-834e-bd83bd40b45e/58895565713.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/afspa_act_1990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10b94c5d-511c-4aa1-bc61-e8f238e4b384/xewawetivijuwalopi.pdfIn PDF document text
    • https://s3.amazonaws.com/bodepova/10621363724.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/cahier_de_vacances_cm2_vers_6me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa643614-9e93-402a-90d5-45f2ff182f11/10143491048.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/xumusom.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/5929498139.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/biology_reference_books_for_neet.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_off00005dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD1 4840 bytes
SHA-256: ee9c5a0a16f6a0a1f75303a383631a4a7851d33fbda23e649c576b32a8c81558
font_01_sfnt_off00006e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4D 10588 bytes
SHA-256: e343f1fe7bb5f3c0f27fef8288adc2bab054c381d9b6a1a14b1d131ce870cde0

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