Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b1bd0145aa00ea…

MALICIOUS

PDF

75.6 KB Created: 2021-07-13 17:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 80d04292ebbe7ff466f04c82699c1dfa SHA-1: 832641cf50610dc5e24cedc37c453fef5d8d36ea SHA-256: 95b1bd0145aa00ea3bb866ff6ede845e22db3f5c63e039b6b77f914b5214cab9
66 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan, indicating a phishing or trojanized document. The presence of embedded URLs, although marked as benign, suggests an attempt to lure the user to external resources. The PDF structure and the wkhtmltopdf authoring application hint at a potential exploit or obfuscation technique used to deliver malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1538

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/qQn0o4eTdIQ/square?utm_term=level+8+answers PDF link annotation
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7f782d0799e4214c18e03/1625814914453/if_two_waves_of_same_frequency_and_same_amplitude_respectively_on_superposition.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC92E 16616 bytes
SHA-256: f442cb45cfb846712f1ee8b30cb86d27442d108d2449a221ad5fe4b51c23f1d8
font_01_sfnt_off0000f422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF422 10108 bytes
SHA-256: d6948c2e166bb83a6d9856fe854c98634631116b9933a276aa05fc026594f179
font_02_sfnt_off00010ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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