Malicious PDF — malware analysis report

Static analysis result for SHA-256 346c2be32d1c8a8d…

MALICIOUS

PDF

35.6 KB Created: 2020-08-15 00:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b901b255a4880610a0a4dc6334fdb3ca SHA-1: 1cec1d14d89456bcab2a113011943baec6f407e5 SHA-256: 346c2be32d1c8a8d40b04a59a08d057b4daeba063a6f3736a2af2588d91ac7de
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate content, such as a repair manual, but redirects to malicious infrastructure. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The ML classifier also strongly indicated maliciousness. 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/wb?keyword=2008%20buick%20lacrosse%20repair%20manual%20pdf
    • http://files.prodigalsunsolar.com/uploads/1/3/1/8/131856052/b2a6d74befa.pdf
    • http://files.thedailyamg.com/uploads/1/3/1/4/131454620/957933.pdf
    • http://files.invisageblinds.com/uploads/1/3/1/3/131381722/zedevusaf-nogerogut-tosakofazojoxid-jaxomilibibus.pdf
    • http://files.kabani.eu/uploads/1/3/1/1/131164112/zitum-mowegedi.pdf
    • http://dijelupe.flattailpress.com/uploads/1/3/2/8/132814930/gilepamoratixav.pdf
    • https://cdn.shopify.com/s/files/1/0436/4907/3312/files/miwuwujuwesetudinodedafub.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/complete_javascript_tutorial_with_examples_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1735/files/tonijesimugelonixedaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/infierno_de_dante.pdf
    • https://cdn.shopify.com/s/files/1/0454/7385/7686/files/87767996687.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6101/files/zefenum.pdf
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/tixerofus.pdf
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/beauty_salon_business_plan_sample.pdf
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/autumn_leaves_jazz_tab.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_off00004adf.bin
f34472fabc7328c6de8a34adfe53338bff837966d51b37ecb21a8d15b70ceb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADF 5876 bytes
font_01_sfnt_off00005eaf.bin
d2d1e03d66ba9789b3a8f9a054a0f76ef56c06600a8dd401278d93d7e0dd0ab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAF 10248 bytes

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