Malicious PDF — malware analysis report

Static analysis result for SHA-256 dded75be00a3d6cf…

MALICIOUS

PDF

76.6 KB Created: 2021-07-17 03:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c211593f26495988c9b444994482ef58 SHA-1: 699d45af877ca20367eb045b1c4fee48d53f8ab4 SHA-256: dded75be00a3d6cfa3022ab6477e4b0c7a3e0235b641b936b3cf48272d9a3a67
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs, one of which is https://feedproxy.google.com/~r/sq/ugae/~3/mHcMeCcfVl0/square?utm_term=will+smith+motivation, suggesting a phishing or redirection attempt. No scripts were extracted, but the presence of embedded URLs and the overall detection profile point towards a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9214

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/mHcMeCcfVl0/square?utm_term=will+smith+motivation
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee6d892af4c01978ffaebb/1626238345951/17959283165.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f07560a05bd62f13dd8da1/1626371424710/medisotibofoximavid.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f04efc0b351c4974e96ff6/1626361596881/how_to_change_the_way_your_mouse_looks.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0eddf6e9a9a494aa23e74/1626402271387/different_methods_of_plane_table_surveying.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60efd1555d627c4551e097ad/1626329429689/monavexafajar.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7f52a687a3d659a4d1b10/1625814314796/i_have_a_stitch_on_my_right_side.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee4de2b1dcdf258da8e0d1/1626230242298/uncle_iroh_singing_leaves_from_the_vine.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_off0000cf5b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5B 16792 bytes
font_01_sfnt_off0000e772.bin
9cadd3e630a71e4cce505684be5bcc5da710b85e3fa5f490bcdbf155fd42775c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 10200 bytes
font_02_sfnt_off0000fe1b.bin
a46f06f4ea0b86d60348d607097dfa58086b446182cbf7aa3425e5b820277d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1B 15760 bytes

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