Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d3082c94b433e4…

MALICIOUS

PDF

69.8 KB Created: 2021-01-10 18:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 39bda796b3444952995138ceafdd5d1f SHA-1: 7a730e1d3b958a228e71dd488b05ebf5e9502e4f SHA-256: e5d3082c94b433e45dcab57476b06c3ff462b046a5624cb4b542c177165c3594
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'traffset.ru', which is likely a phishing or malware distribution URL. The document body, though heavily obfuscated, contains text fragments related to 'Bigg boss' and online viewing, suggesting a lure to entice users to click the malicious link.

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://traffset.ru/123?utm_term=bigg+boss+13+dec+11+watch+online PDF link annotation
    • https://cdn.sqhk.co/lawikuto/j41lig0/skyblock_seeds_for_minecraft_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449004/normal_5fee6b603645e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421476/normal_5fe4d5ad1cdf0.pdfIn PDF document text
    • https://site-1168308.mozfiles.com/files/1168308/sweet_polly_petals_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fe50af920d02.pdfIn PDF document text
    • https://site-1176856.mozfiles.com/files/1176856/pictoword_level_98_boy_and_knee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_5fbcd515e005c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475716/normal_5fdb75235a994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390660/normal_5f8e812e0833a.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/6jhz15F/81029071193.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387226/normal_5fdf8216055fa.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/rakabexozu/matric_result_2018_bihar_board_marksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/movies_free_hd_quality_2018.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_off0000d20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20F 5600 bytes
SHA-256: 0fcf93feda12b79593f546c32c094685e56e6ae3d04476b16ef1cc18fae1d58f
font_01_sfnt_off0000e531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE531 10568 bytes
SHA-256: 04a47d9bf7f1b217471862de6fde373846602921a909befb907dcfbcde82e38c