Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6707545f5cf54b…

MALICIOUS

PDF

83.0 KB Created: 2021-07-13 22:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e8f82f5c8d8623847740a49ff726c426 SHA-1: cfe63491e85a6b5bfc2a983756ff8d4d3d00bdbf SHA-256: 0e6707545f5cf54be4645dbfe318445f72dcd338ccb800cb2e52784a9775fe3f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The presence of an external URI suggests an attempt to redirect the user to a potentially harmful site for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://nomylo.ru/square?utm_term=water+management+planning+tool
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e84258b216a65cd2f27b37/1625834072425/top_5_qbs_of_all_time.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e81c8f81471576eaefbd8a/1625824399647/write_your_own_story_book.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec7cd8288cf71862a8e19f/1626111192837/how_to_make_on_computer.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e79a4fd0799e4214bcd8ad/1625791055256/example_of_the_law_of_independent_assortment.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec9131934d360eb2896109/1626116401214/nikefazakijexeten.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80ef2d56f0f3612732ffc/1625820914249/1_pound_indian_rupees.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8260757d2352c927f5dc8/1625826823438/ryan_reynolds_2_guys_a_girl_and_a_pizza.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec93af478ebe26bfc6dc5b/1626117039918/hach_as950_manual.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e2c7085b1c120f9461b5/1625875143797/wibirazakosodobajamoju.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edd36cf6d8087912bd5259/1626198892889/role_of_statistics_in_research.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9320ef4fe78435a3b58bc/1625895438930/cryogenic_chamber_therapy.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_off0000e336.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE336 16792 bytes
font_01_sfnt_off0000fb48.bin
3da7a1ef67c9a1bcc48e923efefdd9066ebeca4db6c7c2b7b07e273c0c73b7e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB48 17164 bytes
font_02_sfnt_off00012817.bin
006e4daeafe57ca06bd0b6e237cf6fd380e684c89cd2e0fb3fdc121ea351b70c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12817 10420 bytes