Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b2875e3805b0530…

MALICIOUS

PDF

81.0 KB Created: 2021-07-15 10:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b7eeff19895a7b70ba425b5aeaaab4df SHA-1: 35d5971e59a38dcc0489e0b45076fbf51c807a11 SHA-256: 5b2875e3805b0530f5c01780c62d8fb127f70887ae2ee8e1c80230d79ff50d05
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment. No scripts were extracted, limiting the analysis of specific execution behaviors.

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/y83TWYo-3DA/square?utm_term=wrecked+in+tagalog
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efc9aae00eb31d7ceb96ea/1626327466659/70805499155.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efce4596309e3685a8adf3/1626328645784/how_cars_work_by_tom_newton.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee85f3bb85ab7f02c0e4b6/1626244595214/pixewedixoweguvosiv.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed8cb43489b768f17257e6/1626180788382/principles_of_modern_chemistry_solutions_manual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ede7bfe11d817478d2f83f/1626204095939/parupejazorakaf.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e78de6f4d7c53d8b0ec014/1625787878737/snap_on_mt2261_manual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee56e664675e3b9de3049a/1626232550365/21741845752.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8ab53f7a034ccb7b54d5/1626114741273/combine_two_photos_into.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e88a3d5bdaa213a1ada8a0/1625852477444/lego_jurassic_world_free_download_apk_android.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec833b288cf71862a98432/1626112827254/house_of_wax_2005_full_movie.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed8c0e6be96a4ec40bce51/1626180622803/tedanapijasurek.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_off0000d8e5.bin
6502a7a1f53316ecfa22a31bcd39350a7e85691553f49eb640f2a47727b646ce
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E5 18196 bytes
font_01_sfnt_off00010855.bin
d7f57d0a80085ff7e25f1273826d5df1676084aba8cce839ddb9de5157f29d06
pdf-font-stream PDF embedded font (sfnt) at offset 0x10855 10460 bytes
font_02_sfnt_off00011ffe.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFE 16792 bytes