Malicious PDF — malware analysis report

Static analysis result for SHA-256 464b4bca2c67d283…

MALICIOUS

PDF

73.6 KB Created: 2021-04-05 05:10:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b80ff0b40fc032cd970b8c85b84e2495 SHA-1: deffee17a2d03bb2a0adcc5b358b37b0eba153e0 SHA-256: 464b4bca2c67d283b17c1691f338339442526be09bbb2e31d25f5c6c2d4ce852
94 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it might be a generated document used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9856

Heuristics 3

  • 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
  • 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://gimoguvi.ru/award?keyword=carl+gustav+jung+libros+pdf+gratis
    • https://cdn.sqhk.co/junigofulum/eliaPZr/52243910263.pdf
    • http://fanutoragozogow.sportsontheweb.net/rugotelatobakimupatunimit.pdf
    • https://pamumigupoxip.weebly.com/uploads/1/3/4/6/134614169/lebegonefiziromi.pdf
    • https://cdn.sqhk.co/wedowetaso/Dhghjgh/wewejekabasulaxugixam.pdf
    • https://lumigoxodavi.weebly.com/uploads/1/3/1/6/131606620/tekefatuzipe-fulosomul-zokisusar-sidavavog.pdf
    • https://static.s123-cdn-static.com/uploads/4402707/normal_6004779738901.pdf
    • https://static.s123-cdn-static.com/uploads/4411246/normal_5fced129ac02d.pdf
    • https://static.s123-cdn-static.com/uploads/4417815/normal_6001848785391.pdf
    • https://cdn-cms.f-static.net/uploads/4366007/normal_60349892c4361.pdf
    • https://cdn-cms.f-static.net/uploads/4413347/normal_606a406f26192.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nelizenejakarug/american_english_file_5_vk.pdf
    • http://falariwupap.myartsonline.com/cactus_y_plantas_suculentas.pdf
    • http://pabizex.atwebpages.com/metro_map_download.pdf
    • https://s3.amazonaws.com/jixeremipet/kalabhairava_ashtakam_in_telugu.pdf
    • http://lojibovel.myartsonline.com/rugutozude.pdf
    • https://s3.amazonaws.com/xefejevife/nekeveromatexu.pdf
    • https://s3.amazonaws.com/savukojubusum/terumizexitepobu.pdf
    • https://s3.amazonaws.com/firigugixujotov/87881678696.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb34.bin
c8d88b5759a7ea69834d66d7610a23e5ceaddb9ef3f6a2ffe177e5d73b54dfff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB34 5272 bytes
font_01_sfnt_off0000fd2d.bin
5d52de31794b068fd43b45b3d3665e5c3f05bcd916c2de5fa678e4894e0e74b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2D 10772 bytes

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