Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc807469164c271…

MALICIOUS

PDF

74.9 KB Created: 2021-02-26 07:33:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f26610e683c465645b4f69daa3240a87 SHA-1: a4a9754bb02fb03004255ebdda0f8d71f4a4746d SHA-256: 4cc807469164c271024608e9d6b50fbb0f6667cea0efdd692c8060a61fd22c39
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to public speaking, aligning with the detected phishing and trojan characteristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=how+to+gain+courage+in+public+speaking PDF link annotation
    • http://br1.red/python_programming_language_full_courseq8fud.pdfIn PDF document text
    • http://atlas-copco.su/naming_angles_worksheet_kuta92slq.pdfIn PDF document text
    • http://kanshoper.site/new_soul_piano_sheet_musicwbpx5.pdfIn PDF document text
    • http://grafoanaliz.ru/wixeguzirekijesyhhz.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/buponuwebi/92532495214.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/email_formale_italiano_esempio.pdfIn PDF document text
    • http://lijowavatajo.myartsonline.com/dometic_brisk_air_ii_15000_btu_amps.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/master_and_commander_the_far_side_of_the_world_2003.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/2296073830.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/49887145996.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/hexagon_pattern_block_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/46767353756.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/bazavujelaxonu.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/fools_rush_in_full_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/arithmetic_reasoning_and_analytical_thinking.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_off0000e76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76B 5360 bytes
SHA-256: e61ea6f6003b4b831825b0cb8ef103716723a6eda283e67e5eb973467eb3ab50
font_01_sfnt_off0000f9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C7 10864 bytes
SHA-256: 7c8d4492d705e6c402496f5b1a9d22341f8fe52e6ed9f03689ae6a324537925e

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