Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cc0453fdd1522b…

MALICIOUS

PDF

83.2 KB Created: 2021-07-15 23:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1b30fcef7fb1f87a823b799ddfcb896c SHA-1: 75fb8656c0476cf02701734433c5ea725f23f7ca SHA-256: 14cc0453fdd1522be50f5e8efb650e135899a3fb7257ab95153f6bbdb7efab0b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://garglob.ru/square?utm_term=wollongong+flexible+learning+centre', which is likely used for phishing or to download a secondary payload. No scripts were extracted, but the presence of the malicious URL and the high confidence scores indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://garglob.ru/square?utm_term=wollongong+flexible+learning+centre
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9155119a9f87deb726cec/1625888082090/are_brown_rice_good_for_weight_loss.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8fdce0914637f38bdbae/1626116061037/zifav.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee0667ad58ca03d22b1c06/1626211944029/parallel_lines_maths.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edadf503cb9e0b597aa99c/1626189302252/testing_resume_for_5_years_experience.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e926212f3c4128e18a752e/1625892385227/deligaritizo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e871b33249a6038709c516/1625846195605/gbp_to_lkr.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e78e79ba333063f173b202/1625788025338/15572786715.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0480bd59b6c651d14247d/1626359819714/60904408489.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed96a95d4dee687f47f845/1626183337366/your_true_colors_are_beautiful.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e869c80ad3a627070f05f0/1625844168874/49069084457.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee45332ee8b51fd935dcb9/1626228019949/61694369124.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f098637cc0080267696e82/1626380398135/sadetoredomibesixalunebo.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec9b93704a383bbedb9f86/1626119059771/unmount_nfs_share_in_linux.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_off0000e19e.bin
717cea8a71486779698a345807783b0018fc26e4b56dacd0e27270dd6e4b1aaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 17540 bytes
font_01_sfnt_off00010fea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEA 16792 bytes
font_02_sfnt_off00012801.bin
ab21cfabf2ec5dd65353b4ecea9843447ac284b8ec545d24a1b1a45670d02c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12801 10580 bytes

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