Malicious PDF — malware analysis report

Static analysis result for SHA-256 29cf6a34ad77d14b…

MALICIOUS

PDF

51.0 KB Created: 2020-07-29 14:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44c7d9f1feb2fdb7b8b9c7a5223d828 SHA-1: 0bff3ebe07dc9db7c266c44c43a799e716c5e167 SHA-256: 29cf6a34ad77d14babdfad3ea06faa895ee9147caef7455f90b8b8b15180f9eb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to distribute content or lure users. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the presence of a malicious redirector and link farm indicates a likely phishing or malware distribution attempt.

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=der+alchimist+pdf
    • http://files.shopvcboutique.com/uploads/1/3/1/0/131070161/bdc3eb670fc.pdf
    • http://files.orenshabatlaurentblog.com/uploads/1/3/2/3/132303315/573650.pdf
    • http://files.missionfestmanitoba.org/uploads/1/3/2/7/132741029/828557320b934.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/79147429430.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/49586537084.pdf
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/vaxubenozupu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/40421403499.pdf
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/gebinolipatubufobev.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/lenuwoxuzuxamunu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/2478837758.pdf
    • https://cdn.shopify.com/s/files/1/0441/3403/9704/files/letulul.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000881a.bin
89d86e7d5535c0378f82a8ea97625faeb14bb490a3b664ba6f323f2492d47b42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881A 4968 bytes
font_01_sfnt_off00009900.bin
8478cdb035ab3098d2d49e9b831af10745fff1d9f20c016ef7b15503a400ae6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9900 11400 bytes

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