Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b990c764f262b17…

MALICIOUS

PDF

70.3 KB Created: 2021-01-12 09:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d704ee9d053ee6fc3b91ff1180aa5fdc SHA-1: eac641e2cc24a3b09472db40dd0518ab5cf09db7 SHA-256: 0b990c764f262b17351ba570c01b7a65ad676efc0921080cb6211f73ac512bca
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafficel.ru/123?utm_term=lightsaber+choreography+competition+winners', which is likely a phishing lure. The document body, though heavily obfuscated, contains references to 'Lightsaber choreography competition winners', suggesting a social engineering pretext to drive users to the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/123?utm_term=lightsaber+choreography+competition+winners
    • https://static.s123-cdn-static.com/uploads/4403822/normal_5fcc915b92f83.pdf
    • https://gigazubexu.weebly.com/uploads/1/3/4/6/134613152/45ea942ba6.pdf
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5f97fdd8a2366.pdf
    • https://static.s123-cdn-static.com/uploads/4409811/normal_5fee1d3cac3f9.pdf
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5fab2c8f4683e.pdf
    • https://site-1174676.mozfiles.com/files/1174676/86982185089.pdf
    • https://sobopagugakevul.weebly.com/uploads/1/3/4/8/134881985/podusavul.pdf
    • https://revunisukigi.weebly.com/uploads/1/3/4/8/134849871/5850600.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/mixanaz/gabopuforidavawi.pdf
    • https://s3.amazonaws.com/xamibudasagas/pegofofaxarodopuxuvowep.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8c3.bin
643382fbfbb703bf352b5bc4a2b2d16636dcc0c785417683220d38934d004ab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C3 5376 bytes
font_01_sfnt_off0000daf3.bin
41dd79f1ab591b47465e396b11729f477093857020ad36e07f0d5cad7950f0b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF3 10376 bytes
font_02_sfnt_off0000fe4a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4A 4324 bytes

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