Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd400ccd689b0d81…

MALICIOUS

PDF

94.2 KB Created: 2021-07-15 13:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e3f4dcc466b54a590c97db8860df4e66 SHA-1: d454357510ab2d755fec17b016c91a21f3b44bb6 SHA-256: bd400ccd689b0d8185503036081c3f6b1c7e36acc9360476da35e66c787e18a2
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL that, while currently flagged as benign, is indicative of a phishing attempt. The ClamAV detection and the presence of embedded URLs suggest the document's primary purpose is to redirect users to potentially malicious content. No scripts were extracted, limiting further analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier clean score 0.0477

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/eoPDrVzwpx0/square?utm_term=how+to+pronounce+usually
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7782c906000174a5f1f05/1625782316802/lexasewopiga.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7a8037e45264421f5e119/1625794563748/female_wolf_names_and_meanings.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
font_00_sfnt_off0000ecbf.bin
0d7d6f6c42c2f8b45cfc88f6ea35bc5d646eabfe79626a0df10b0e8fb85ec782		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECBF 10568 bytes
font_01_sfnt_off00010515.bin
fddcbe21bdf9fb2753729b4ab5b26d7a3fbb01e3fe51d41ab0725360e25c189d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10515 16244 bytes
font_02_sfnt_off00011b03.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B03 16792 bytes
font_03_sfnt_off00013310.bin
5221cc56e96b657ff7c15f49bf1fbf1b5222e15cd7ffd769ce953162a3e53832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13310 2064 bytes
font_04_sfnt_off00013c4b.bin
957464a4ac39b396f4ca998b4464da8588caca2081c8a644da2efaf585e051da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C4B 18252 bytes

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