Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7d7d1ceaa7d30a…

MALICIOUS

PDF

75.2 KB Created: 2021-07-13 09:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6f5ddb3c73cbe1856895d92641e443c2 SHA-1: 69254f2d46a72fad2575c7181647dc6b09ec4f7d SHA-256: db7d7d1ceaa7d30abac25f1cdb4ca766ed5e77762675b67f611d1eb2b8d88286
96 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to lure the user to external resources. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

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/qI_NY8u86tA/square?utm_term=the+archangel+of+love
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8e7a8c19ad4998dbc511/1626115706861/gavufatumuki.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7a4a8300fd66e1954ffc/1626110538235/example_of_assimilate.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e92c38c14ff043cd5d4d2e/1625893945112/94238487634.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec886a2de9850677740eb3/1626114155136/10_highest_grossing_movies_of_all_time.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8299dcef4a49b3aacf91/1626112666038/9933063277.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e87b3822947c179f9361dc/1625848632887/management_by_stephen_p_robbins_13th_edition_free_download.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec9a70af807f1e152772cc/1626118769043/3104428415.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8a52700aa07a7895914c/1626114642235/jee_main_exam_papers.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_off0000c72a.bin
30cff1bf5123b3e9d587c342c4808885d7b8cc3067f0d64904c91a6af7c2304e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC72A 10288 bytes
font_01_sfnt_off0000de4d.bin
7ed8a82c64e9192d62a52e43cd381ad2f41aea258292fa0a8a5428976ab6954f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4D 16444 bytes
font_02_sfnt_off000108a9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108A9 16792 bytes

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