Malicious PDF — malware analysis report

Static analysis result for SHA-256 3799cba89295b9e3…

MALICIOUS

PDF

80.5 KB Created: 2021-07-19 15:35:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c05661e275c2c256362a6a0a2ee61c8f SHA-1: 5d4767803606119b227a79eb934b01cf08d38b8d SHA-256: 3799cba89295b9e30f11e5422873f35b5792560d6a3def65efa4e8450fbeb4c7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by both ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, even if some are confirmed benign, suggests a potential phishing or redirection attempt. The file's structure and metadata do not reveal specific scripting or exploit details, leading to an unknown family classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://feedproxy.google.com/~r/sq/ugae/~3/aauXj3bnHUA/square?utm_term=north+south+east+west+live
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0fa90c825a553dff2922a/1626405520653/homescapes_hack_game.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee7cbddb6052518eca007c/1626242237493/nowom.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f02a8d54c38e1eb6495e17/1626352269416/oysters_on_half_shell_near_me.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e920475fa2eb14b90bafa2/1625890887887/a_measurement_is_accurate_if_it.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0295d49582827e2ff98ca/1626351965277/58782656085.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f296da51c2e8609847e78c/1626511066939/wopukof.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec90d20f7d8d50062cd31a/1626116307150/windows_10_recycle_bin_is_corrupted.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8d0211a746407a41f7c8/1626115330958/nothing_but_the_truth_george_kershaw_summary.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f494e926e2e727c26f566e/1626641641222/convert_mp4_to_mkv_with_subtitles.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec808cc8b0d544b6d7583e/1626112140764/6327685875.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f09d21816bb346b5d1e86e/1626381601744/xumamekikutulef.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f529f92117d935efbb811e/1626679801887/27681277009.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_off0000d8d8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D8 16792 bytes
font_01_sfnt_off0000f0ea.bin
6567859a947bf69047d5e6f3f6459e6ef94188df72ad83914c1fcd5aa91ac2f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EA 17336 bytes
font_02_sfnt_off00011e2e.bin
d021de86f9b9d392e868e8ed664111ddffb37e1fd304767122396dad9cb5a1db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E2E 10328 bytes

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