Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fecf96cac46083…

MALICIOUS

PDF

85.8 KB Created: 2021-07-17 23:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ec81cdd2f2e28815a839c40a600c0791 SHA-1: 53865ad2641cb70c6e9c900101bc7aba76c587a4 SHA-256: 44fecf96cac46083e7b9941a47f942e2b295f609440e3b6921250379ecfcc707
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that points to a URL, which is a common tactic for phishing attacks. Although the document body is heavily obfuscated, the presence of the URI and the heuristic firings strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6839

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/EjZ5HCEZs_A/square?utm_term=wolf+launcher+android+tv
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f084b33f5e7b0f5ec5cd92/1626375347673/65011505152.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f2adaf6678663e6a293d2c/1626516911474/debate_topics_with_answers.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0769d49bf6a548c871bfd/1626371742348/how_to_remove_an_extra_page_in.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e96718aa30721e65f10a81/1625909016960/interference_engineering_physics.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f0de47c08012782f7ce1dd/1626398279367/17568221782.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ab.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AB 16792 bytes
font_01_sfnt_off0000ecc2.bin
53443608bf712caf8dcfbad0f5ce5b0bb5e607b4b4edd8c56575eb34cbc77674		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 10564 bytes
font_02_sfnt_off000104c5.bin
fce37636e1cf986b035c691ff1039afedcaf6b905e065081c85a253d088fdace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 19124 bytes
font_03_sfnt_off000135b3.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135B3 16092 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.