Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d59d6706861d17a…

MALICIOUS

PDF

84.9 KB Created: 2021-07-16 08:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c856179c7c821e99f9f55ccf83c596c5 SHA-1: a425b807511183ed1922ae2dee5f8481b92edb8e SHA-256: 9d59d6706861d17ad477d72863a9db78fdd403529a2e9a529b9d2d650abe6193
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains an embedded URL pointing to a suspicious domain, flagged by heuristics as potentially malicious and detected by ClamAV as a phishing trojan. The PDF structure itself does not contain readable content, but the presence of the external URI and the ML classifier output strongly suggest a malicious intent to redirect the user. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5817

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://pistant.ru/square?utm_term=zfs+administration+guide+pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f08a2509ca025bae4312a6/1626376741364/50087362864.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edd298d6ef6771c1da8fc1/1626198680770/porter_cable_fr350a_owners_manual.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edb83c5860d606f4851c57/1626191932585/18863787958.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee5b8e4d490f67275410bc/1626233742567/focus_on_yourself_and_not_others.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_off0000e8d0.bin
f1ddbd04473fed3ee3d31100e6e86df77c8f28403027f311a3e9f90291f3bd68		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D0 17476 bytes
font_01_sfnt_off000116fe.bin
992a4e69a6157cdfd74289fd1cf4c2dcf1e43a0f8213097d847ffa6a691a4125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116FE 10856 bytes
font_02_sfnt_off00012fd1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FD1 16792 bytes

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