Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cd6ebd5c1461cde…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 22:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe90b052a94ba95ee2aeaf70bdfe7ba9 SHA-1: 447933d7cb0d634842cdf66830252532ee3ad969 SHA-256: 2cd6ebd5c1461cdea913c8716944fdaa2132dc2f9b9ca27838ce3d829f6c1cb8
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to this redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate links. No scripts were extracted from this sample.

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=1000+frases+mas+usadas+en+ingles+pdf
    • http://files.main-global.com/uploads/1/3/1/6/131637254/likinemigowigiwo.pdf
    • http://dixisuv.mosholudaycamp.com/uploads/1/3/1/0/131070374/mimabopixetuli.pdf
    • http://files.foundationjustice.org/uploads/1/3/1/4/131452997/5782644.pdf
    • http://files.epsaofficial.eu/uploads/1/3/0/9/130969175/2356833.pdf
    • https://cdn.shopify.com/s/files/1/0446/9476/5724/files/calculus_2nd_edition_briggs_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/4003/8298/files/nobilisefuberemaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/dudixosef.pdf
    • https://cdn.shopify.com/s/files/1/0435/6364/7137/files/nafopadinidubiresu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/76748965835.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
    • https://cdn.shopify.com/s/files/1/0436/9927/3896/files/wuboxisazidemi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/55353791195.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/25983040691.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/87400688971.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/66305821483.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/40277109459.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_off00006a1d.bin
53de1dc08496d9f88e0780047093c4321fc8fda7b9e2f2b8bcaad17798346d8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1D 5460 bytes
font_01_sfnt_off00007c8f.bin
b5567997311a4bed3dfd436faf73278b94b1968f88d07087fdc9c4c84d1e515b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 11144 bytes

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