Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18c0eba3b2dce7b…

MALICIOUS

PDF

57.9 KB Created: 2020-07-31 18:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b38d08fb73ecad0e1fea5d7c1f4b7a35 SHA-1: c4c25f1cfb6041f9828646c0bf38f6badfd12bf2 SHA-256: f18c0eba3b2dce7bc0f97f2cb0a3291fa8a029e38872097adb2f7db151eabeb0
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Take on me minecraft lyrics' and the malicious URL itself, suggesting a lure to trick users into clicking. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.com/pify?keyword=take+on+me+minecraft+lyrics
    • http://files.pennstatebabylab.com/uploads/1/3/1/4/131406274/kabelemawuw_pomiwezawo.pdf
    • http://files.hustlecary.com/uploads/1/3/1/4/131452846/jezegajo-zodifadokiril.pdf
    • http://files.rhssoftball.us/uploads/1/3/2/8/132815807/nuferisenir.pdf
    • http://files.themccleerylab.org/uploads/1/3/0/8/130874210/1e203f585635.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/71462015337.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/wigonetiwigor.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/jefefamipobekakak.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/52178456291.pdf
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/30253665112.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/dogitegedakevuduwezem.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/66690859548.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/62638846632.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/11518423474.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9384/files/zewizibewajijijubem.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7217/files/79798745997.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_off0000a4db.bin
3ad784314513129857a67cbd16dfc2eb5bc726aee21c81438c5a1d2e821b07a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DB 5140 bytes
font_01_sfnt_off0000b655.bin
2e5b13528aa5552b646986648fd2384bdf561261b60b1fad54a074acdd46bd53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB655 10632 bytes

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