Malicious PDF — malware analysis report

Static analysis result for SHA-256 949f3c4cbaadb1ea…

MALICIOUS

PDF

84.8 KB Created: 2021-06-01 09:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95eaddfe8fa4fc1083de2f477147606f SHA-1: 9b15859e0446b297244eeab711face3ffb11cb26 SHA-256: 949f3c4cbaadb1eaf7566d9944d5b582361cdde73a1efade755fc678714979ff
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for game downloads, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of malicious activity, likely leading to a second-stage download or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://archism.ru/pbw?utm_term=naruto+shippuden+ninja+storm+3+apk+obb
    • https://koduvorubosu.weebly.com/uploads/1/3/4/7/134719400/jopoxemujiguvekikaju.pdf
    • https://kojarivij.weebly.com/uploads/1/3/4/8/134859678/9516517.pdf
    • https://static.s123-cdn-static.com/uploads/4474997/normal_5ff0c4ac3129e.pdf
    • https://cdn-cms.f-static.net/uploads/4417527/normal_6030a70b5901e.pdf
    • https://static.s123-cdn-static.com/uploads/4387701/normal_5fcd5e2cd8197.pdf
    • https://cdn-cms.f-static.net/uploads/4480736/normal_60241c0dddf8d.pdf
    • https://static.s123-cdn-static.com/uploads/4494431/normal_5fe15a35df77c.pdf
    • https://mizavujubamu.weebly.com/uploads/1/3/0/7/130775062/ziwuduregeleveni.pdf
    • https://static.s123-cdn-static.com/uploads/4403823/normal_5ff4915f2d5b7.pdf
    • https://static.s123-cdn-static.com/uploads/4409417/normal_5ffd632c9ad2f.pdf
    • https://static.s123-cdn-static.com/uploads/4366646/normal_5fd09464594f9.pdf
    • https://vawevoza.weebly.com/uploads/1/3/1/4/131482963/wotavasarumofa.pdf
    • https://cdn-cms.f-static.net/uploads/4470205/normal_6031295933747.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/079b83c1-8aad-4eed-a118-9dc3e9702f20/the_book_of_enoch.pdf
    • https://uploads.strikinglycdn.com/files/3d92f8e3-afb6-486b-9274-50d2a53cc9ac/52438330492.pdf
    • https://uploads.strikinglycdn.com/files/e0cbebdc-916e-46a3-97d2-7a6a2df63439/fender_hot_rod_deluxe_pr_246_review.pdf
    • https://uploads.strikinglycdn.com/files/fafebf5f-d5e6-4355-984f-30959694618a/cual_es_la_metamorfosis_en_las_mariposas.pdf
    • https://uploads.strikinglycdn.com/files/55270325-b396-4666-982e-8b9cf508f178/ttf_urdu_fonts_download_for_picsart.pdf
    • https://uploads.strikinglycdn.com/files/56c6dd1b-5c88-454a-a37e-a3192645538f/how_much_for_adobe_premiere_pro.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22e.bin
c01f9047234050b40f202117e614e32479f6df8e9d0bc6df73e6c28a43986d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF22E 5228 bytes
font_01_sfnt_off00010483.bin
0f5a564c9c5365f0a5349457c71472f635304851fec24cc14c9441dca2326286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10483 5580 bytes
font_02_sfnt_off0001174e.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1174E 1800 bytes
font_03_sfnt_off00011fdb.bin
15a405ee71c5a6bc721c1236a514f537210e81615f60200f6274ca5f9ce61204		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDB 11076 bytes

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