Malicious PDF — malware analysis report

Static analysis result for SHA-256 708e5717e0954ca1…

MALICIOUS

PDF

79.7 KB Created: 2021-07-12 20:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3690885b621efc53639492d94b7a9109 SHA-1: c90eb469a2d2c447e8731d64dee5cbae162315b9 SHA-256: 708e5717e0954ca1d28c74033f0085825a2a44720e152e19e65214da52699cd6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains an embedded URI that points to a URL, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of the embedded URI suggests an attempt to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6198

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/gPkW7oTCsL0/square?utm_term=nba+live+mobile+cheats+coins
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8ebf7e6a58043b68ef914/1625877495984/18543443095.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7a81485664d35b0e4b2d4/1625794580724/infiltrating_moderately_differentiated_adenocarcinoma.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92f2d2c5c2f6215c97cb2/1625894701209/41634323856.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_off0000d634.bin
3491e35ad9c002cce5c95dcd8c99ebbe01bd312bfa29316b7f8967dabd09e92d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD634 10580 bytes
font_01_sfnt_off0000ee40.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE40 16792 bytes
font_02_sfnt_off00010652.bin
83dde64f92a9a1b808a815048089f343821c58910ca13217e70c210d65b466ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 17096 bytes

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