Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfe6a3c1f85db78…

MALICIOUS

PDF

74.6 KB Created: 2021-02-22 09:26:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: b47d1198bf78fe5139bd029046aebf19 SHA-1: 6f44b88efbb540807cd2e3c124b44a650c7885ee SHA-256: 2bfe6a3c1f85db7883801f3696b4acccf63fbc63c7f4a751dca9100bfddee306
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a suspicious domain, identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=john+deere+x360+manual In PDF document text
    • https://cdn.sqhk.co/woleparos/heTV5ij/14396941616.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5fd06530f0904.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/chjx7D3/vue_js_code_editor_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tepobugu/jefihjj/roku_premiere_remote_volume.pdfIn PDF document text
    • http://gradstroy.su/guide_post_hotel_bradford_postcode92g94.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/bjd0gfP/xewewonunifibexomuxu.pdfIn PDF document text
    • https://cdn.sqhk.co/pesofesidoke/idbhbjb/5559183207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444369/normal_600be300646dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367947/normal_5fefa4d94ba41.pdfIn PDF document text
    • https://cdn.sqhk.co/rovonoset/jhFlheZ/tijalakete.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/wobuzisibal/12050373155.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/takifidu.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/leremitotusomudor.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/9557113010.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_off0000e694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE694 5404 bytes
SHA-256: ae3fa0675c4ce35ed6f3cdd5dab22715e5880b26f2b0d9c4369c98ba3310eac2
font_01_sfnt_off0000f8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C6 10932 bytes
SHA-256: 0c421cd8ee3ae0b23db3ab4a8fec082bd554bd4eca9a9b1535e9ff5c141fb69b

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