Malicious PDF — malware analysis report

Static analysis result for SHA-256 b292fc1d59ee505e…

MALICIOUS

PDF

77.0 KB Created: 2021-07-13 09:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b41766c79a3c24b760c990b1a873009f SHA-1: 8a105f39693f03da5e4a0ca73115efa7926fdd3a SHA-256: b292fc1d59ee505e6c9ccbeb61bfc7b8320d16c233e2d7559db12cac09bf18d4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL, disguised as a link to download DVD player software, is highly suspicious and likely leads to a malicious payload. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8791

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/sq/ugae/~3/iCUEKX862tE/square?utm_term=dvd+movie+player+for+windows+10
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e88a33bd02c20dd77f8e2a/1625852467355/48662393182.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ecc32221140c20d8538887/1626129186228/whole_account_quota_share.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ece378bc9b47210005ee71/1626137464741/android_fast_viewer.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7dc8efdc75e32ab079ad3/1625808014263/differential_and_integral_calculus_by_feliciano_and_uy_complete_solution_manual.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7e4297be683581ce30094/1625809961398/51237179130.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_off0000cb18.bin
4cb11f37313c32c7e85d7d2ef2a7eea24b95d30f7b5b87856f5fe07ffea27666		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB18 16632 bytes
font_01_sfnt_off0000f691.bin
92256dc9ec1e8fad56bc8c0c80d0d7a15e296bfa5093994200aae7ae4c446e3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 11004 bytes
font_02_sfnt_off00011027.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11027 16792 bytes

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