Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf54f36e7731d8d…

MALICIOUS

PDF

79.0 KB Created: 2021-07-12 20:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 58d44cd106fd3ec7ba269ca084fe8c95 SHA-1: 5a946bf47e9cea714df72a70cfb24d733f5ce417 SHA-256: 5bf54f36e7731d8d4066dfea097bf610ca4b9a2a8d9cce5f7649da8a05dfddcf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV specifically identifying it as a phishing trojan. The presence of embedded URLs suggests a phishing attempt or a lure to download a secondary payload. No scripts were extracted from this sample, but the overall structure and detection results indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/UZrB20b2Dcg/square?utm_term=stick+war+legacy+unlimited+all
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e94ed3854c1d3b34883bc2/1625902803160/10964209562.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec788372e2584f24620969/1626110083483/how_to_insert_a_photo_into_a_mac.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7c69038ed220952ac8dcc/1625802384936/27281041605.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7a8fc217102653d52ffd/1626110607417/6213064283.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7a0cf89f8e700bf677ac/1626110476528/76736112403.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7b059b977dd1475c7b1e7/1625796697094/94714649360.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e95bd12f3c4128e18c1afe/1625906129817/siwuvelunewosoxu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e81237bab06216133a85bd/1625821751363/84141230844.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8c09ae534972f7b799c04/1625866394928/bold_small_letters.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e927e866be7e490f0fd9ed/1625892841156/16951573971.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8486a68d8d74fdbbcbdd1/1625835626540/81295279303.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_off0000d298.bin
89cfbd10dd2ad5a7c0bfdb728d99148b71ccc18aea6636972719bc145bbc3912
pdf-font-stream PDF embedded font (sfnt) at offset 0xD298 16792 bytes
font_01_sfnt_off0000fe7b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7B 16792 bytes
font_02_sfnt_off00011692.bin
82f4975260e8e99c01fbb094ec8486fa7c681b85bac5fce284bd3a41c19180d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x11692 10892 bytes