Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0330211fd589d8f…

MALICIOUS

PDF

119.7 KB Created: 2021-07-16 23:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 208fbabe1aee2ea36392128802256e24 SHA-1: b59466d10053301b58689f8bac0f6d8055eddcae SHA-256: f0330211fd589d8fa1dc738526dff75e401998cec1a664340ccd595be8b4a30d
96 Risk Score

Malware Insights

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

The file was detected by ClamAV as 'Pdf.Phishing.Trojan' and flagged by an ML classifier with high confidence. The presence of embedded URLs, although currently marked as benign, suggests an attempt to redirect the user. The overall structure and detection name indicate a phishing attempt delivered via a PDF attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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/razvivatel/yapz/~3/4Ji06Fp1PxY/square?utm_term=auguste+comte+sociology+definition
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e81bdf51cb2a526cff1c34/1625824223189/24216603656.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee7cc07426fb5109f8530a/1626242240765/dibojefo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7729baeb71755aa781068/1625780892133/holo_the_wise_wolf.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee48376d75c50a5d447c37/1626228791451/vaxamonis.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed7c6964a4563c8f7e1a2d/1626176617511/41670462838.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee3d52c27d1e40a54a40c8/1626226002728/37633166781.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee72d7588fb5669517a708/1626239704333/jennette_mccurdy_y_ariana_grande.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8aa78f901cc159efadb92/1625860728297/term_for_difficulty_breathing.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f09b0e4ac1c45ceac6329a/1626381070391/the_analytical_ability_in_an_interview_is_explored_through_questions.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee20b284a0477e84a964b9/1626218674777/one_arranged_murders_book_download.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8825ef3a1f037b3711a92/1625850462524/97262946704.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee4913537273346e309009/1626229011507/fozoluz.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed3bcffc46f1629a03167c/1626160079424/xewutatoxogezefajono.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edd2b4e6792c2552b985a2/1626198708157/squamous_cell_carcinoma_espaol.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_off00017492.bin
9291e93196475301abac03dc1e6f883fa151f2dfc410884fe10286d078d8f16f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17492 17432 bytes
font_01_sfnt_off0001a1a2.bin
206ef13ce989c512ae2502ba3dfc04d06dc47cd851e1dc5d1b58e098671a6c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A1A2 10752 bytes
font_02_sfnt_off0001ba30.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA30 16792 bytes

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