Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a64764e1947eb4…

MALICIOUS

PDF

112.6 KB Created: 2021-07-23 00:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 03a8057b7e926832e1f280584173686c SHA-1: 17f60e6216c5803b623577a6a88ac507d5bba6ca SHA-256: 78a64764e1947eb4b1878b90203ff4fba6401b1c98ef3d60c6757d0c6df711bc
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 phishing attempt. The PDF contains embedded URLs that likely lead to malicious content or further stages of an attack. No scripts were extracted, but the presence of embedded URLs and the ML detection strongly suggest a phishing or credential harvesting scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/WVKuihPcy9U/square?utm_term=bee+sting+swollen+and+itchy
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f9dc8b88f92a12df5241d2/1626987659663/62331076169.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f6c25f3ae42c6dfce4c27f/1626784351981/age_of_empires_1_download_for_computer.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f6f0b4acdfad4da76cbe9b/1626796213286/jonejokopewu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f48d71bb7e64222d0594f7/1626639730008/airline_manager_tycoon_mod_apk.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f350e6668793736d318359/1626558694743/90467464059.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c9b9c5d9771337091a3d/1625868729826/jejigonagavidokalunawo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f016c60869775317303147/1626347206572/on_cooking_download.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7b285e97713016fa0383f/1626845829990/what_is_a_saturated_solution.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0bed41c98e64adee26abf/1626390229556/saludisilaj.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f92f5cc339af15f894cb3d/1626943324633/11786037198.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9013b563c1506a8b4d06e/1625882940077/how_to_drive_a_manual_4_wheeler.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee4b650b33b63bb8c6fb13/1626229605704/the_cell_is_like_a.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0373f1e1a563dfb90bd3b/1626355519548/mcq_for_physics.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f91ef8049fed7a90dc7150/1626939128258/fiwigidaxadubabewijogaxam.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f09b43f3204a3f57ecd9e9/1626381123324/signs_of_torn_tendon_in_ankle.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f080c2a45c1f1e8e188f63/1626374338929/xp_farm_without_spawner.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f9dfe010c15512b062befc/1626988513149/jofuwupepuxixalapuk.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_off0001574d.bin
e39126cfd9c65bccbbf48e9445728110a4f90c270d7b7f0a344eafbb6757698b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1574D 17332 bytes
font_01_sfnt_off00018461.bin
0fd9a74779127c969226d32b4206a983ee26208594ddc3ce971249cafba335a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18461 10800 bytes
font_02_sfnt_off00019d21.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19D21 16792 bytes

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