Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed04a912eaac5ec…

MALICIOUS

PDF

84.3 KB Created: 2021-07-17 18:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 38e9c868e1088308efadfa3b012cf848 SHA-1: 77dbab0f3b3ca3a49efb50e28dbe0fde90a265d7 SHA-256: fed04a912eaac5ec234d14769553cff76ec095b17bf8a09faab00fe7799e3dd4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to lure the user to external resources, potentially for phishing or malware distribution. The file's structure and detection by security tools point towards a phishing or exploit-based attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/HbdJGeoIq_s/square?utm_term=prevailing+wage+construction
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f25524e13ee97666fdf86f/1626494244351/35113461946.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f01a1e79f953043cbfa345/1626348062289/lymph_nodes_near_clavicle.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee5c703753dc428c8a4eb7/1626233968769/manual_guide_i_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edb602c8312e4ee1e0ac87/1626191362258/use_analyze_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f17a7c8cd1ac765d52a66e/1626438268815/my_colleague_and_i_or_me.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7d73ebab06216133844f0/1625806655309/73790509269.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0a7bc87feb8184b98ecba/1626384316850/different_types_of_online_banking.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edc59424c32e4364b1680e/1626195348569/fisuwapumegaxewewonozef.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8be56d2f17c4cdf3f97fd/1625865814909/wububabatujemijexitokuza.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f04c57ba2ad67ed2d6794b/1626360920190/turnkey_home_meaning.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9623ac4c1a734c5d8bb2b/1625907770761/pumaboliwufogetobasatugo.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_off0000e809.bin
cb0fdfc174a4d917e5fb20c9d7512b9b2bf320d447889588ebbfe457e8bb5b3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE809 10656 bytes
font_01_sfnt_off000100a4.bin
2bf6b81f75bc17c276c4d6a2d1a3bc3c35a726b7b2c0ce28a93706c56e2eaa6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A4 17280 bytes
font_02_sfnt_off00012e00.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E00 16792 bytes

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