Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d78ef07ae08305…

MALICIOUS

PDF

73.7 KB Created: 2021-07-14 04:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d933708c39b443ba5280ca2887e0f21c SHA-1: 44bfc3428a2b65f140dea96e2fac6dd8557df31c SHA-256: 45d78ef07ae08305c61fa7976d3d3e71f0d58cb56fe445e0a410426ccc257699
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 malicious intent. The presence of embedded URLs, although marked as benign, suggests an attempt to lure users to external resources. The PDF structure itself contains indicators of potential exploitation, leading to the classification as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2592

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/v-xubMviL4Y/square?utm_term=easy+fortnite+quiz+questions+and+answers PDF link annotation
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8f6c2309bd63f3d843a2d/1625880258424/two_toed_sloth_and_three_toed_sloth.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edb332881afe0f0cedeeba/1626190642440/remedy_for_voice_loss_throat.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_off0000bf38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF38 16504 bytes
SHA-256: 89f63532801e5d91eba4b46b5ad512476f1b2bf416cc6db5c41ee33d5103404c
font_01_sfnt_off0000ea11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA11 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10228 10792 bytes
SHA-256: cdeb465fcc8ea9b6ce27a6dd1d8458050dc03cd9a0b223e693dde281af11ab50

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