Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2574c49a3eca8a…

MALICIOUS

PDF

74.5 KB Created: 2021-07-16 10:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9ac7d74d9f74f9288060c856c61fb0cf SHA-1: 675a8fb0ab7b9327aaf3297eec9adee9275f908b SHA-256: 9e2574c49a3eca8a04eabb43a6a2c0fdbdc293103264219a86176af0dfcaac69
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and heuristic firings point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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://feedproxy.google.com/~r/sq/ugae/~3/nCRFBnYrBHY/square?utm_term=avee+player+free+template
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edfe4fd6548a387fd67d8c/1626209871779/pobibafivenavipixum.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecbd13929f7b3a9fe099a6/1626127635865/saluxajajupafowo.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee6f375f7927514e402ea2/1626238775924/animal_crossing_wild_world_rom_download.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8ce0573083775092e5976/1625869829487/the_christmas_chronicles_2_free_online.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec825ec8b0d544b6d78575/1626112607001/nevowodibilogizuj.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c34c.bin
e3643957600ee90b1e2655f32b8100ed42b54e5b8049dbd5c9b61500af1738e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC34C 10196 bytes
font_01_sfnt_off0000da41.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA41 16792 bytes
font_02_sfnt_off0000f253.bin
990d59f9b8a3c71320c7c5508b53901d8735c130935c13ef5066757a0ddeaab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 16400 bytes

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