Malicious PDF — malware analysis report

Static analysis result for SHA-256 87646db6dbbe2e7f…

MALICIOUS

PDF

107.3 KB Created: 2021-07-12 21:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dd308ca13b1b03f894a8a0f852ba51ad SHA-1: 3f17a3f83ae8db1172241d92072c6eb7a5212c97 SHA-256: 87646db6dbbe2e7f2e465e36d89d6f8a330e0f2704120518f8c639d0e90cda8c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The PDF structure itself contains elements that are often exploited for malicious purposes, such as embedding external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5608

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/~3/7R6buoffwiA/square?utm_term=how+to+learn+a+backflip+on+trampoline
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7e460f29cd6423db4c48c/1625810016112/maggot_to_fly_transformation.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e96719dc37083541bac71b/1625909017747/vil_meaning_in_english.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec838e31b0b43e07e6d07a/1626112910654/85796192507.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_off000144d0.bin
c9b79bd194e35d050d0fd75a369e0b22b1f8f1f27c63bfe0f772b2f04b84b9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144D0 10784 bytes
font_01_sfnt_off00015d63.bin
e9e393852a56f01a27e73bc847d7319c6cb985345933a8c4035d5a37b0675fcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15D63 16964 bytes
font_02_sfnt_off0001896e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1896E 16792 bytes

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