Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce28678fa2097d9…

MALICIOUS

PDF

75.9 KB Created: 2021-02-27 08:51:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d15491ebefc9ef656c9eb0a793bae3a SHA-1: 7c582dc2f9a861a9f8d27b24fc64733f7ac630a0 SHA-256: dce28678fa2097d9ed018112e75e92fa4234997da954015cb213f0d5c15a8b86
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that redirect to external sites, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to the primary URL, suggesting a lure to a deceptive website.

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://resalured.ru/wix?keyword=what+does+make+a+text+to+world+connection+mean
    • http://zumewidife.mygamesonline.org/hp_officejet_pro_8615_driver.pdf
    • https://cdn.sqhk.co/tosuwukiwate/gdcwhdM/w3schools_c_functions.pdf
    • http://jorowijedo.mywebcommunity.org/22932112690.pdf
    • http://fapasevusiledap.mygamesonline.org/a_certification_for_dummies_2019.pdf
    • https://cdn-cms.f-static.net/uploads/4504922/normal_5fd636ea66deb.pdf
    • https://static.s123-cdn-static.com/uploads/4489848/normal_5fedf35a1332f.pdf
    • https://cdn.sqhk.co/wanolugago/8ibidij/91710984367.pdf
    • https://cdn.sqhk.co/momajuxu/RohdoSw/no_sniper_rifles_fortnite.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zijedan.atwebpages.com/63470155945.pdf
    • http://zegetafirotazaz.atwebpages.com/nimiwesadolukasukupuzuf.pdf
    • http://faleferesevo.onlinewebshop.net/96886546465.pdf
    • http://nejesezape.myartsonline.com/66080575342.pdf
    • http://duxegejuw.atwebpages.com/z_line_tv_stand_with_mount_instructions.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed50.bin
ca476128f5ad889ced0fe58a5bc837c4e5caab2077eaf4dfa656b9ff9bdec752		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED50 5416 bytes
font_01_sfnt_off0000ffa8.bin
4742e6b33228233375b561d5403f096f0481270e582d46d0c11725902b805bbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA8 10240 bytes

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