Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7e1e2e5dde4687…

MALICIOUS

PDF

83.0 KB Created: 2021-07-19 02:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 666ad99c75684385889bb382fa119fb5 SHA-1: 89fe41d7893d8a9c383ed04040a51dfb486a4d5a SHA-256: 3e7e1e2e5dde4687d429511e592b72d2005b983d91a3e637696c61a6ca105374
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified 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 a potential phishing or credential harvesting attempt. The file's metadata indicates it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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/AnJPYMJXbyQ/square?utm_term=future+low+life+mp3+song+download+free
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee7efa588fb5669518324c/1626242810640/life_after_life_free_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60efe7911e1a563dfb8cdc80/1626335122142/roasted_brussel_sprouts_and_mushrooms.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2f8e7699a8678c5765d7e/1626536167862/claim_victory_meaning.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f471ef6167905317e637b6/1626632688079/use_of_conjunction_that.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee50d0588fb5669515ed40/1626230992585/how_to_hide_chat_in_minecraft_xbox_one.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f1cb170b9a99535fc3fb4e/1626458903967/8817872007.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ede2c98443ee2c893079da/1626202825934/35015894430.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f213d330be7f22063f1600/1626477523678/songs_about_being_at_peace_with_yourself.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f36c4d29712869f0688505/1626565710031/niwadi.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9dda934d360eb28ab9e9/1626119642201/pubg_mobile_global_discord.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_off0000e189.bin
b71564d88c897d7a1520c1accad090d15c4cb7d15d83528d731f9aaa077d7ae9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE189 16884 bytes
font_01_sfnt_off00010da5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA5 16792 bytes
font_02_sfnt_off000125bc.bin
6fc5795659f40dacea5a06e4bb4b29321ef6b1ace93cb140441e7d5b31bd7723
pdf-font-stream PDF embedded font (sfnt) at offset 0x125BC 11176 bytes