Malicious PDF — malware analysis report

Static analysis result for SHA-256 e925aa04e12e40a3…

MALICIOUS

PDF

75.5 KB Created: 2021-07-13 16:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 10032e69bf870b15ab23c5ce4f848360 SHA-1: c5d7a2f3d4290ba508bdd13e43be5bd3b2e6afe0 SHA-256: e925aa04e12e40a391d72976dcf9ac63d8ce089e136c1dfdf2ec2ae73d3c8843
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 identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to lure the user to a phishing site. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7703

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://synerhu.ru/square?utm_term=i+have+the+mind+of+christ+bible+verse
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e91276dc37083541b82b54/1625887350658/low_voices_on_the_voice.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec8d0151a87c5d75ac7ac2/1626115329234/96082873577.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8174f8ad60325f0c8aa6a/1625823055774/yam_meaning_in_kannada.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_off0000c531.bin
8769d64f154fcd9e16a11959c9bc11574024980b5ce820a2d72a672841e49f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC531 16856 bytes
font_01_sfnt_off0000f0f7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 16792 bytes
font_02_sfnt_off0001090e.bin
c2c10c3a774a3a6174d3b9589849b91c50cb4bc4d11ccf3662777122df4fbad9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1090E 10896 bytes

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