Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c62568927794c1d…

MALICIOUS

PDF

46.4 KB Created: 2020-08-01 11:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0d16fcc98d2086c51c4f9c916801df1 SHA-1: edb034f52c6038682b9a32f4749a2a018a7b733d SHA-256: 8c62568927794c1d3bef82438fd2e4434ec9d6347d0a4ec80e2530aa1a0edbf6
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary redirector URL being 'https://ttraff.ru/pify?keyword=python+new+line'. This indicates a likely attempt to lure users to malicious sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the sheer volume of links suggests a link farm or redirection attack.

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.ru/pify?keyword=python+new+line
    • http://files.myemeraldplantation.org/uploads/1/3/0/7/130775509/deminupu.pdf
    • http://files.shewolfattackteam.com/uploads/1/3/0/8/130815026/fexowo_palixutofe_guwadeguzi.pdf
    • http://files.sarahulan.com/uploads/1/3/1/4/131452958/447a471be8.pdf
    • http://files.behavinglively.org/uploads/1/3/2/6/132683088/kebadaxibapamite.pdf
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/73469951829.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/surisexadifu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0985/files/siguwawinugiwopefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1309/5067/files/23197833821.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/5000/files/62571974828.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/81766564199.pdf
    • https://cdn.shopify.com/s/files/1/0433/9082/8700/files/futofop.pdf
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/nujafenuwinux.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/91090467084.pdf
    • https://cdn.shopify.com/s/files/1/0429/1998/5319/files/siruzomevenis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b99.bin
a924789ff88d2ac9518f50dda1651b6be7aeeecb1539315fe7b362f740ce552e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B99 4272 bytes
font_01_sfnt_off00007a14.bin
28283175f150921cdb05aca01250f5ea0589d006245e5bc7a59ded632ce9350c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A14 10680 bytes
font_02_sfnt_off00009ead.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EAD 4324 bytes

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