Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2b01052a87c01c…

MALICIOUS

PDF

81.8 KB Created: 2021-07-22 11:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ad60e041f863b863bf4bb87ce01373bf SHA-1: b3faeb1a5cc6ce3ca3bcc4353e3f186653d07fc3 SHA-256: fe2b01052a87c01cc7bac7e8906957fad6c873dfb5b3e1d73fdc928d60f1d6ce
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF with a high ML classification score and ClamAV detection indicating maliciousness. It contains an embedded URL that, while marked as benign in the provided data, is part of a pattern often used in phishing or malware delivery. The PDF structure itself is also flagged for duplicate object bodies, a common obfuscation technique. The presence of embedded URLs and the overall malicious classification strongly suggest an attempt to trick the user into visiting a harmful site.

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/razvivatel/yapz/~3/UQ8tT55rDuk/square?utm_term=robux+and+money+converter
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8be62684b4e19c9c59f10/1625865826320/histology_for_pathologists_5th_edition.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f60d1a321fe36b00018c07/1626737946544/colloidal_solution_is_homogeneous.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2b02ed68f32259051dffd/1626517550106/download_winrar_for_pc.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9529bb68d8f0f4bf9d112/1625903772098/tisesusuduberu.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f661300be3e11db0aa38e2/1626759472605/promulgate_used_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f7cf56896e5a6c1e342f96/1626853206293/20950458177.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f64013f3a396036e352ca4/1626750995827/31422530627.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f765f605949d0d451782c7/1626826230831/sajajevoxavi.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f564246167905317f2ba53/1626694692330/best_cheap_cars_to_learn_manual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f71ac5eb9af61b36d24915/1626806981152/through_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f16500da20a917db5247db/1626432768701/single_and_lonely_in_church.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ede2077ce58f02ed94523b/1626202631816/88_official_constellations.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edc948ba7c7f743c1afeda/1626196296779/33084231092.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8f23937da2614570be841/1625879097551/61315002243.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0874cbed3ab58f82a03b2/1626376012456/bullet_force_unblocked_hacked.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f476e78a396f1703aab5da/1626633959902/24793210725.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed735339532c3941c105eb/1626174291647/bmg_music_library.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_off0000ded0.bin
4871e633dfd5ce7304b499ad9bb72e932633148f330f640d91f14f83040f5d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDED0 10792 bytes
font_01_sfnt_off0000f7b4.bin
e7ee89d93f5bd9d4c6dd92cbc7d4b2b02c14032d434192a99020184d569adaee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B4 16108 bytes
font_02_sfnt_off00012168.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12168 16792 bytes

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