Malicious PDF — malware analysis report

Static analysis result for SHA-256 59096d4eef0c80f2…

MALICIOUS

PDF

81.9 KB Created: 2021-07-14 01:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7fc2416312b44f473719a2c4d117f73d SHA-1: 243cf9d236bcf057158dc6467a39ce16ffa2fc11 SHA-256: 59096d4eef0c80f2eb3fc97fcc7e95ab3765347fb83216ca2879aea20e5041b6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. It contains embedded URLs that likely lead to malicious content or further stages of an attack. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit vulnerabilities or trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6221

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/uzX87CUNjRg/square?utm_term=sample+of+informative+text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9c4b4f558d0bf39e1ede/1626119243684/happy_mode_clash_of_clans.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edabb137bfc37e3c247d17/1626188721717/criteria_meaning_in_kannada.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8cb04f558d0bf39c6815/1626115248629/roguvetujuwupagiko.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_off0000e0e2.bin
20bfcd8aeb0c2fc27a0c7cceffd3cf23d985839214954ef550e59726d8938199		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E2 10596 bytes
font_01_sfnt_off0000f90f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF90F 16792 bytes
font_02_sfnt_off00011121.bin
23cbd0da1bc82ea95777b35d2945114f33bea65e12c209ee72bf9473130c40aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11121 16600 bytes

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