Malicious PDF — malware analysis report

Static analysis result for SHA-256 84da5de79a8f901b…

MALICIOUS

PDF

191.6 KB Created: 2021-07-18 17:20:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 880e898a742926bd5f502174d68a18cc SHA-1: 48caab34d090e7beff27fa163e4b591d6e0fd301 SHA-256: 84da5de79a8f901b6fe4734e274295c3ea345b557b09088ceafb1a0dbe60c963
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ClamAV with the signature Pdf.Phishing.Trojan. The presence of embedded URLs, although many are confirmed benign, suggests a phishing or malicious redirection attempt. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0355

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/nCRFBnYrBHY/square?utm_term=fug+meaning+in+tamil
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e81a4b51cb2a526cff064f/1625823819503/danugesek.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed114b8c96c6301f904ad5/1626149195570/1668570824.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0554f5ab2ef6cb3ecbbdc/1626363215750/nefaxizidilej.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3e96e29712869f06ce2a0/1626597742381/zakisob.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0002b96d.bin
28cd79a33ffebc544e3e62d0cb1b0c0f7354f591a6a1b7555db32877278c35ff		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2B96D 19332 bytes
font_00_sfnt_off00024cf6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CF6 16792 bytes
font_01_sfnt_off00026508.bin
71d4678edbdff4587ee7c0e0d193fede9d7aa45a4b9b06b25dd5536475ee4f07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26508 25324 bytes
font_02_sfnt_off0002a2e1.bin
e7e8838ba1537f32ff7d88eb95e10211b08c9e85b890e527649ae9e39f4383a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2E1 10140 bytes
font_04_sfnt_off0002d9c6.bin
c15c6d21be5c8ffd7723a13527602fdaf28b3bd8994453b3b289df489cb3d71d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9C6 6120 bytes

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