Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b9d2f1412e802c…

MALICIOUS

PDF

69.5 KB Created: 2021-01-13 16:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f2f75ac9b197619feccd622d55728c29 SHA-1: a859f7de32482c16d44aa2b2f4bc3274372bd4ed SHA-256: 92b9d2f1412e802c4b0e427a6ef876a619f6abf0986202f383122ac937408024
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=manuale+benelli+bn302'. This URL is known to be associated with malicious activity. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure users to a malicious site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/aws?utm_term=manuale+benelli+bn302 In PDF document text
    • https://cdn.sqhk.co/berovanova/1M8ijdF/guitar_flash_2.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/jfhdVjh/redbox_new_releases_horror.pdfIn PDF document text
    • https://cdn.sqhk.co/sologavabo/jBleBhf/24009833441.pdfIn PDF document text
    • https://lifoluzasodani.weebly.com/uploads/1/3/1/4/131437418/kagewapawuw_xujopumuvi.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/etQhbge/xejubuwigedovib.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/vaxebisapesi/satexidev.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/descriptive_writing_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/3d_converter_navisworks.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/nigaxujezumaz.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/welltodo_2019_consumer_wellness_trends_report.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/bl2_shield_codes.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_off0000d120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD120 4988 bytes
SHA-256: fa69ea20297b3f35d2702c88d589fae4879d456cbf829da39cb1c51f4424c8a0
font_01_sfnt_off0000e237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE237 11476 bytes
SHA-256: 0c2f38932017712b4a041dfb57c421ee01c17ab04a13e187d37fe0e5cd8548e1

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