Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64840d07e6769ea…

MALICIOUS

PDF

84.3 KB Created: 2021-07-16 03:04:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6d9742d85da0feda3e312506cdd3ceae SHA-1: 0d045396b7698d684cdffa7ff059cffb22d2eef0 SHA-256: a64840d07e6769ea8b1b3b2d9677b4f696a9d62a2a6cb5032eac3c4ea5905e2f
96 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely exploits a vulnerability to execute code. The presence of embedded URLs, even those initially flagged as benign, suggests a potential phishing or credential harvesting attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point to a malicious document designed to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8871

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/UZrB20b2Dcg/square?utm_term=whats+is+love+baby+dont+hurt+me
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f071ac40a5bc6c0f759bb9/1626370476991/gajagadew.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e92782787dde1a90ae31d6/1625892738604/47175338913.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec88f2bdd82073f6ffb434/1626114290356/when_do_you_want_to_see_me_in_spanish.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7a93ed56f0f36126e5df2/1625794878758/calories_in_1_glass_of_chocolate_milk.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0bb2374384d54fdf795ab/1626389283291/2962059373.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee53f5b1dcdf258da938d4/1626231797374/thousand_faces_of_hero.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8178e80504e0a776c1717/1625823118195/dunanofepumi.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee2d6539b8260338690e7d/1626221925585/do_you_know_what_it_feels_like_loving_someone_thats_in_a_rush_to_throw_you_away.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0b2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B2 16792 bytes
font_01_sfnt_off0000e8c3.bin
27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 16160 bytes
font_02_sfnt_off0000fe38.bin
97bbf4855d2a19a36583f6fea3cb1ac98a40ca4db5c023a04d31cc06997dd7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE38 16780 bytes
font_03_sfnt_off000129e3.bin
20a4863dde1cd2c15b4d34d9508a51ab6aa36c8a59e79c3a655253fc00e12bb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129E3 10924 bytes

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