Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d0a2a9072a133b…

MALICIOUS

PDF

84.7 KB Created: 2021-07-18 07:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eeb256153c93942e3aff60f4eea75f46 SHA-1: efe7d87b847b85845c396ce220eb42f1f617efd7 SHA-256: c2d0a2a9072a133b421b756f58dbb7a43c3095f89546d3ea3002ff615faa8f54
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. The PDF contains embedded URLs that likely lead to malicious content or further stages of an attack. The obfuscated document body and the presence of external URIs suggest an attempt to conceal malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8440

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/-7-cX3opz_8/square?utm_term=ios+store+on+android
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f218b52da4c70e3d8afece/1626478773561/finejamuxojodixezof.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f05cdc0d9e4679a05aa070/1626365149100/tuvemunidatexofajosed.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f18440d1fa142bceb3fc2c/1626440768262/advantages_of_hydroelectric_power.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f369849471b562af122853/1626564996882/zibavoko.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f28ed8ebca9b5ae8e3a12e/1626509016635/project_report_on_advertising_and_sales_promotion.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f37f8a8a396f1703a14702/1626570634784/what_does_ads_stand_for.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_off0000ec89.bin
b5274f8bd55eeed65688fa180f40a216d5c0f9c4dd0f9655666c19384fa1d614		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC89 10148 bytes
font_01_sfnt_off00010353.bin
87074dd2c6a98c9e9df7ddd050e36902932b7cfd9d9884015b79a5ef54ab5277		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10353 16840 bytes
font_02_sfnt_off00012ef7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF7 16792 bytes

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