Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf1160d8e7e8660…

MALICIOUS

PDF

68.3 KB Created: 2021-03-01 04:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 020cdf10e2ea8e406035e5319f9908d2 SHA-1: b5f5935d14bafb5bd97e62de8b4242f191aa89d1 SHA-256: 6bf1160d8e7e866062f4ae1b4433cdf0ac00c5af5daff4cab2678598b77eae33
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely part of a phishing or scam attempt. The document body, though heavily obfuscated, appears to reference a product, suggesting a lure to entice clicks on the malicious link.

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
  • 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://mezovuduw.ru/award?keyword=wahl+5-star+cordless+detailer+li+hair+trimmer PDF link annotation
    • https://cdn.sqhk.co/kezixowog/eEO8je9/dual_approach_in_planning.pdfIn PDF document text
    • http://ru-1.casa/34572172568zmnfa.pdfIn PDF document text
    • http://findssldz.xyz/679031097324l1ye.pdfIn PDF document text
    • http://fherixq.com/laduvofebuvj4ywm.pdfIn PDF document text
    • http://max-lifting.store/50771493191uh793.pdfIn PDF document text
    • http://alcexpress1.xyz/lyric_video_template_final_cut1rq8v.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/hgVPmeQ/pattern_lock_screen_free_download.pdfIn PDF document text
    • http://blaugrana.ru/126647755gmm6o.pdfIn PDF document text
    • https://cdn.sqhk.co/dizukenepu/Jhdjjqd/slack_api_auth_token.pdfIn PDF document text
    • http://zatoboyvibor.fun/latest_telugu_love_bgm_ringtones6bboh.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/safago/lifuwoja.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/22105174504.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/67360312436.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/45617308296.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/54434027441.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/18964711276.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/66000392425.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/disedave.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_off0000ce59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE59 5348 bytes
SHA-256: 5236646d7cdede8bb5ce79acd96b7b0aaec84777fd3a25f5b998873677776b03
font_01_sfnt_off0000e073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE073 10276 bytes
SHA-256: 595f6d02acba1a2f774c669a6dc053bd7b9df869630a881fac48610cc75b9d80

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