Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d6e36eff1db88f…

MALICIOUS

PDF

37.0 KB Created: 2020-09-21 20:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12676af4da664c9c537ac558553bb473 SHA-1: b25c87c518969590400af2050288f5b59ca34ff8 SHA-256: e2d6e36eff1db88f103b3e11cdc301719aadec48ab78fd86f4dce4e69c60334b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.club/wix?keyword=6+hole+ocarina+tabs+zelda'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain the malicious URL, suggesting the primary intent is to lure the user to this external site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.club/wix?keyword=6+hole+ocarina+tabs+zelda
    • http://files.frankysmusicproduction.com/uploads/1/3/1/3/131398094/113ae2cf746.pdf
    • https://ba7208df-e4e8-4440-b6f0-03d7ce2a7f7e.filesusr.com/ugd/0b46e6_8b98728598514194ba6e1f46048b8acb.pdf?index=true
    • https://c2f94435-0518-40db-9f65-4bd311cb09f4.filesusr.com/ugd/a42eed_eeee571799cb46e8b80af2f8d33c78dd.pdf?index=true
    • https://4e93f922-75ad-4361-b7d6-ddcc0a082b8c.filesusr.com/ugd/7a7fb1_636c892ebc2c42a1965a84c1129d6f5b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/15677378102.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/jupukuledax.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1582/files/bukatobanejesotalosagosam.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/sosoxonopibutigifewej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005297.bin
5fed51f889f94e9b2544c435f80a681cbcecfbb69376a497b0ba4b924ffbea88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5297 5276 bytes
font_01_sfnt_off00006479.bin
980653693b3ff6f7a87efba9d515f29057de01fdd253d0ebabbb8ed7d335f063		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6479 10340 bytes

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