Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a49229443dab95…

MALICIOUS

PDF

73.5 KB Created: 2020-08-03 11:36:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1073e74a2a8445bc259a4a2ca7dfa97 SHA-1: 681649b9296aca3dfce636b88a36f3b3866aab8f SHA-256: f2a49229443dab95e26d917d4449d74576b05737241eb164c4cdcfc6354f03cd
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of the lure. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites. 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.cc/pify?keyword=facebook+ads+guia+pdf
    • http://files.hersacredsanctuary.net/uploads/1/3/2/7/132740458/mamoburob-xejojave.pdf
    • http://files.prometheanpress.com/uploads/1/3/1/8/131855992/figifelifulavovunewi.pdf
    • http://files.northgatepfc.com/uploads/1/3/1/8/131856877/nufopidadoxi.pdf
    • http://files.pdxccc.com/uploads/1/3/0/9/130969312/gesamama.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/nesonuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1084/files/sijesigopuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/doraxofafal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/mibubuvenatutavanimotar.pdf
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/wimisomara.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/42106660241.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/36441431291.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/wikiwod.pdf
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/fixexisogudut.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/vedagaxisagafojiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/1782/1605/files/open_graph_debugger.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8282/files/gamiwovuzewilukofepes.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_off0000dfcf.bin
8661599af593a895e103a0f8f8cf8fdc29480500f682f5d80465ef98d04fd0be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCF 5352 bytes
font_01_sfnt_off0000f217.bin
ccc4f36d687fd503b70f217e824ab08ef4617ba94aa1237990a3b3f46c577ca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF217 11384 bytes

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