Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1f63476e5f6a5d…

MALICIOUS

PDF

76.3 KB Created: 2021-02-26 08:21:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bdfd1a83a91ef44622d84c8ffb8c0fe8 SHA-1: 6b628a1b5b07ee0bf86a6b12391bd96a9f771fa3 SHA-256: 2f1f63476e5f6a5dad804dc36ab551dd4a4af5f758c926a624d3499efbc5e0b0
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with text that appears to be a product listing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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://yafferge.ru/123?utm_term=genuine+garmin+vivofit+jr+2+replacement+bands In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_5fd7b26e7afc6.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/e7Kiad8/kivoxemorigajowina.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/gejlicH/sad_ringtone_audio_mp3_download.pdfIn PDF document text
    • http://detonicinitalia.website/80026646945z7wf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422367/normal_600ffb8048a85.pdfIn PDF document text
    • http://idealicaitaly.site/27353026617mpcei.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/dijdaif/44381545117.pdfIn PDF document text
    • https://cdn.sqhk.co/gijesali/rhdDBjd/riu_palace_playa_arena_gorda_punta_cana.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/rjijzEx/rojavukixixulukolop.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/dotivaf/homeostasis_in_the_human_body_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/44244914559.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/sacred_geometry_shapes.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/set_background_resource_programmatically_android.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/8771012381.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/writing_a_thesis_statement_worksheet_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/definition_of_capital_asset_pricing_model.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_off0000e57d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57D 5916 bytes
SHA-256: da27936659a11e6acee5f22e1190d570c8b3f91d6fba595227ceb25b9f645058
font_01_sfnt_off0000f99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99B 12220 bytes
SHA-256: 07cf7a96c2a5f5aebd17f982da9d07870af3e156d4ade5d12e047f3eae63f654

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