Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d8a6bbb9cd4705…

MALICIOUS

PDF

72.8 KB Created: 2021-01-12 08:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 37ed62f71bf3331854c41179887fdaf3 SHA-1: 9ba3b87dda0db97a721609df33f73dce8983b19e SHA-256: 62d8a6bbb9cd47057901e88f9e270339b02b708b682475e11d018730c84ca70d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=martin+reilly+memory PDF link annotation
    • https://site-1212380.mozfiles.com/files/1212380/llb_cet_2019_online_form.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/JzjjGGd/nowipivunafa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464707/normal_5fc3ff2f7cb70.pdfIn PDF document text
    • https://site-1171107.mozfiles.com/files/1171107/lusiranizinunumewux.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/wenobagupexekap/fda_autoclave_sterilization_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/jebizexupalujujowuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/artistic_effect_editor_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/forceps_guided_circumcision_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/bhojpuri_video_hd_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/48444113189.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/pdf_to_word_converter_arabic_support_free_download.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_off0000e116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE116 4760 bytes
SHA-256: f8bae1e003e29aecd70a17516c26f7200066c426afabd99ab6eaf6e83c716a99
font_01_sfnt_off0000f13e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13E 10884 bytes
SHA-256: 409a8ba74c965cea8378a5a00cff24309b4889fe60e7e1478ef7e1c8d4e57516

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