Malicious PDF — malware analysis report

Static analysis result for SHA-256 7687d68daa1d38ec…

MALICIOUS

PDF

83.6 KB Created: 2021-07-16 07:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eaee1fe0b6f70af225e81f370f23a8a7 SHA-1: 342631f438285ed60bbd0e9ce23a715efd08d244 SHA-256: 7687d68daa1d38ec66e23f0f27283d4f7ab82785d75120322922f4ce0f919634
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains embedded URLs, one of which is a feedproxy URL that could potentially lead to a malicious site. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to trick the user into interacting with a link, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/razvivatel/yapz/~3/nCRFBnYrBHY/square?utm_term=clown+on+computer
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0b09799c6ff5ad5c3c1a7/1626386583736/papas_burgeria_download_android.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e76b40a3638a455af5b9d4/1625779008786/tax_on_land_purchase.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7f956ed7e630439654e06/1625815383133/plant_vs_zombies_hacked.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8b21ab10572398ae6bce1/1625862682300/fafobewojopawuwubipivefaz.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f02dcf5740a719f4ae6694/1626353103345/the_second_law.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0fda25554232196ba705c/1626406306343/free_robux_color_ball_blast_game_mod_apk_unlimited_money.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8233948fdc2594043de63/1625826106074/72358468500.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee506da005482cc157bfd3/1626230893924/correlation_in_business.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0b547db86a67d857ba4ab/1626387784023/choose_the_correct_words_and_write_them_in_your_notebook.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e95be13b7e7c633451f40d/1625906145645/authorization_letter_to_collect_house_key.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0dbfb9392da325e92b3a1/1626397691434/greater_personal_confidence_and_self_esteem.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7b123efb14d11220ef7b2/1625796899716/esl_library_second_conditional_answers.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f092c1fa1341620cd952f9/1626378946181/6.5_pounds_in_kg.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7ae4a7d3b385c94b35a6b/1625796171022/66780522020.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_off0000e789.bin
361b0bedd694ab36b239a1c19ce745721724c203a469aee8aa96b2555a4b53c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE789 16712 bytes
font_01_sfnt_off00011303.bin
c68ccfdbd13954ad8688acf514efa72ccc2ae1f87fbb1768b6e580fd2430d00e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11303 10332 bytes
font_02_sfnt_off00012a65.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A65 16792 bytes

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