Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d6a358c53cabca…

MALICIOUS

PDF

67.4 KB Created: 2021-01-25 10:34:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cabcd1f77145e511395011a45cf57ce1 SHA-1: e80a24b0d2013abcb6c13a55fed97a2325b0bae2 SHA-256: 24d6a358c53cabca5c6ee64e00e2ae669c9e00122273c6bdb863de7eb53093f4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a payload or visiting a phishing site. The document body, though heavily obfuscated, appears to be a lure related to Christmas trees, suggesting a phishing or scam attempt.

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://jacksth.ru/123?utm_term=2+foot+christmas+trees+decorated PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412761/normal_5fe5c2ea17326.pdfIn PDF document text
    • https://cdn.sqhk.co/lelabepena/b1ycjic/47912148992.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/fI2gjgf/nfl_standings_2018_week_6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494648/normal_5fdbe0d8a2fb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422884/normal_5ffe7a38d0c52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380228/normal_5fdfc76f8196f.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/runelite_menu_entry_swapper_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/semejegofip/rat8ja2/famerixema.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369776/normal_5ffd989cc100e.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/fjdhaic/fashion_model_salon_time_management_wedding_shops.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500200/normal_5fe91e231f923.pdfIn PDF document text
    • https://cdn.sqhk.co/zefipuvuwifi/PjaiiOx/tiduforavegebususixo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381532/normal_600bff084aad1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367667/normal_600396f21af37.pdfIn PDF document text
    • https://cdn.sqhk.co/pelazuwoz/jjijtmN/88893096002.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/YkKwhaX/18250826148.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/pidufozu/zoruwelimigirexupoja.pdfIn PDF document text
    • http://riduxipilitaj.epizy.com/croatian_rhapsody_free_piano_sheet.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_off0000ca96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA96 5268 bytes
SHA-256: ec5f601f0350a322981396cb7d3a9aaf0065a2cea37449c97e43712296aa8a4d
font_01_sfnt_off0000dc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC55 10944 bytes
SHA-256: e95abf42ca44c79720d7d2b2add89155d077355c4d3c30ffeadf75352eee80f3

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