Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6f3cab2a4a2d36…

MALICIOUS

PDF

72.1 KB Created: 2021-03-02 09:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f2f3f05c17fd9535748e9e4e83c4df0a SHA-1: 7c1b62e50bfa9cca35d50385aec46f2fdce1389a SHA-256: cc6f3cab2a4a2d36afbc7ee4f15b3a48d09a20e79e96015a469b78def704bd34
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely serving as a lure for users seeking a specific PDF. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a malicious site for further exploitation or phishing.

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
  • 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://fokemale.ru/strik?utm_term=biblia+del+ministro+reina+valera+1960+pdf+gratis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370080/normal_6014198d4492c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_60065b9c56379.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_5fefb9a2819b7.pdfIn PDF document text
    • http://lagulesuko.medianewsonline.com/windows_10_turn_off_screen_hotkey.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447878/normal_6011815483988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_602d7300145f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifotabelimudon.myartsonline.com/tableau_online_training_and_certification.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/zoxotuvasuvofak.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/15706001484.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/dakodufasotes.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/drudge_report_whistleblower_article.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/wisifonazuginiletisi.pdfIn PDF document text
    • http://milebulijulami.onlinewebshop.net/92902386312.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/easy_anti_cheat_paladins.pdfIn PDF document text
    • http://zuvuzevo.atwebpages.com/kosuxegezixi.pdfIn PDF document text
    • http://sukokovevaz.atwebpages.com/wirufowaxav.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/lidebijereluwazejawej.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_off0000d70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70F 6112 bytes
SHA-256: 2bf0560edfbad11fea1a2d317e576ecb2019030a661eb19b410cbec2520a4f83
font_01_sfnt_off0000ebc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC6 11568 bytes
SHA-256: c0dc5641f5bf6893d9c7a6e8d536c90b77209861826199d626bf850d0caf1f64

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