Malicious PDF — malware analysis report

Static analysis result for SHA-256 101877a0dda4fe16…

MALICIOUS

PDF

77.6 KB Created: 2021-07-20 09:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2a24f02ed95b69c8a61503b0f81379dd SHA-1: 874dcecb40f9f16975280a56d2f0aa7257bcaf2b SHA-256: 101877a0dda4fe16c21be0eeeabd88b0f024c681e75cdc878595fc341b19eed1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing attempt. While the embedded URLs point to benign content, the overall structure and detection suggest it's part of a phishing campaign, likely using embedded scripts or exploits to achieve its malicious goals. No specific scripts were extracted, but the PDF structure and heuristic firings strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7604

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/AG-UZpNbJGc/square?utm_term=what+does+ma+stand+for
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f330b836db6462519e74a8/1626550456868/law_in_action_understanding_canadian_law_answers.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e936c2b9b95949b65f6ecd/1625896642836/6983630106.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f1fef02da07331b9dffd86/1626472176217/25833855995.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_off0000cd1f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1F 16792 bytes
font_01_sfnt_off0000e536.bin
f7357198cdf617c5ab72d08c63ab6ffd36a1dd37cdd5911bbc1555c250504244		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE536 10476 bytes
font_02_sfnt_off0000fcd5.bin
906cf4f3b7d9070cfabc796c7ae0da8214ebbc880995935a05a0ff1440bd8ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 17644 bytes

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