Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30d036376507f4a…

MALICIOUS

PDF

78.0 KB Created: 2021-07-12 21:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ab6cb7169f5d2213d38489b903946797 SHA-1: 4df3d3e964a41b1ed2104b2971d3fa00333c5cc8 SHA-256: e30d036376507f4a0559f571418dbf766480530b5890f599ce652640fdc7a9de
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to redirect the user to malicious sites. The PDF structure itself, generated by wkhtmltopdf, may contain exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7145

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/uzX87CUNjRg/square?utm_term=watch+mha+dubbed
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7b3d668ba31612b53826/1626110781922/orthostatic_hypotension_underlying_causes.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d18fa5e1975eb392c592/1625870735292/how_about_a_writing_a_good_research_title.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8e19dcc7c086459238664/1625874845878/bufijurowixawa.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7c0317be683581ce14530/1625800753689/97486233458.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7fd9ff9c8b53cea21247/1626111961578/64354670352.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c80b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC80B 16792 bytes
font_01_sfnt_off0000e022.bin
7e34a4b44de5afd6c36690e2731e8c56a893935ccf4490e4096e0632a9ea8fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 10240 bytes
font_02_sfnt_off0000f72c.bin
4562ac3041dff4208ce344d697dd0d8426067f455c15dc7a436feec504da102f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF72C 17076 bytes
font_03_sfnt_off00012366.bin
964b25653c693455dd0d5069c865e92c96256fc5bf1f46edbed4d2b942354a57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12366 1804 bytes

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