Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6c0a56bbaf745f…

MALICIOUS

PDF

78.2 KB Created: 2021-07-14 10:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7c2e126c4c1b1606dcd50f436e053439 SHA-1: 5775f3fff99d02af5759d06a0a77293adf605e71 SHA-256: 8b6c0a56bbaf745f3ad86c6ac52ca288d6712b74d93e82be63e773a68d1d176f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier, indicating malicious intent. The presence of embedded URLs, although some are marked as benign, suggests a potential phishing or credential harvesting attempt. The file's structure and detection by multiple engines strongly indicate it's part of a malicious campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6612

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/~3/4Ji06Fp1PxY/square?utm_term=russian+doctor+appendectomy
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee02010229956bd137fdf6/1626210817321/do_you_know_what_time.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e91312fc46b15058279cb2/1625887506264/gesasojebeniwirepuwuboj.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9386831aaf5e928b9621/1626116998948/transition_css_multiple_properties.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e91cb1defa333328aa5a80/1625889970051/yes_boss_movie_mp3_song_download.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_off0000cca4.bin
a8002964b4f05c72f8c62f4456b8cf0ade4d82a27d841255c142094f17ab7d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA4 17624 bytes
font_01_sfnt_off0000fa1c.bin
d6dab79dbbf0f9bd06a4e6a32ef82c6a2569bedd1d2c6d65016977abc1740da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1C 10888 bytes
font_02_sfnt_off00011351.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11351 16792 bytes

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