Malicious PDF — malware analysis report

Static analysis result for SHA-256 675617bcd4249b00…

MALICIOUS

PDF

124.1 KB Created: 2021-07-15 10:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cd983a4f5a281ecd9deb0588bc3619ec SHA-1: b461756fef9c4cebf7f4a9a1c90523ffddf9deb0 SHA-256: 675617bcd4249b00379c4d102fa31bc5047a5d653d003eb7f3e168c24caad9a8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI. Although the document body is heavily obfuscated and unreadable, the PDF structure and the embedded URL suggest a phishing or malware delivery attempt. No scripts were extracted, but the presence of an external URI points to a potential download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6796

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://feedproxy.google.com/~r/sq/ugae/~3/rCno-htTzZk/square?utm_term=the+great+awakening+of+the+mid+1700s
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e81e9c872c4c6263c779b9/1625824925086/applied_strength_of_materials_6th_edition_answers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efdf35c57e07264c1fadb0/1626332981334/pobonenaluzaju.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82ff1efb14d112214ee70/1625829361266/dasirojikolugo.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8baf7e5cd11affce190d/1626114991884/latter_meaning_in_english.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e940a5f492d21a0f6bd428/1625899173456/things_that_start_with_c_preschool.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e86c321b1ea3752714a25c/1625844786629/nerve_gliding_exercises_for_thoracic_outlet_syndrome.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_off000181d9.bin
9cc1eab0e5a635b727a82379fbd13cea896ae7296efc76ab89e0b0913c76d6f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181D9 11120 bytes
font_01_sfnt_off00019b9c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19B9C 16792 bytes
font_02_sfnt_off0001b3ae.bin
edde3d0bafa187f5388a2c8aa492cba2d428a70e8db6033780a413337c4b9f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B3AE 17884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.