Malicious PDF — malware analysis report

Static analysis result for SHA-256 b960caa53691a61b…

MALICIOUS

PDF

75.0 KB Created: 2021-07-13 20:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7218b7c1475906836f7e39d66148e91f SHA-1: e66e03ea6e52bd407e6c7e01312494d1d37f340a SHA-256: b960caa53691a61b056a4145ed656855cf4aaf92f960896da301fabd1fcefc27
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing attempt. It contains multiple embedded URLs, some of which are disguised as legitimate content, likely to trick users into visiting a malicious site. No scripts were extracted, but the presence of embedded URIs suggests an attempt to redirect the user to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7483

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/~3/7R6buoffwiA/square?utm_term=world+conservation+day+posters
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec904a5f8bf969071ed82f/1626116170097/35162339679.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c6aa684b4e19c9c6505e/1625867946797/mulidosom.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7b81dafd06e4982e8bd78/1625798685539/ghd_live_app_download.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7c8f9d56f0f3612703d76/1625803001689/97044337642.pdf
    • https://www.alamy.com/licenses-and-pricing/?v=1
    • https://www.alamy.com/world-nature-conserva
    • 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_off0000c5ac.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AC 16792 bytes
font_01_sfnt_off0000ddbe.bin
db32190803cdd26fc138b562d9615be32d0aeb571810601f78a40a0bd44b5591		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBE 16240 bytes
font_02_sfnt_off000107f5.bin
d63d97b4b38cd2c2b66c226a6a4f4bc7670a036976c38e239314fa1d36d8fcaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107F5 10680 bytes

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