Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c201010a45aeda…

MALICIOUS

PDF

48.1 KB Created: 2020-08-03 09:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7baa1b30c6e6b30392f4072e8091f20 SHA-1: bb681ed70673a835b2b3c32ccc30e8abd9cdacdf SHA-256: 56c201010a45aedac8fb739aa296ebbea39311e27e603c0dc94239a14905f532
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious content, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text and references to 'Smokey bones nutrition', suggesting a lure or phishing 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=smokey+bones+nutrition
    • http://files.gillettehandyman.com/uploads/1/3/1/3/131398428/koduza-zesenedafate-xawunalisiwado-bofifumisow.pdf
    • http://files.eleanormccormick.co.uk/uploads/1/3/0/8/130813427/berezopadexivi.pdf
    • http://files.camdenauctions.com/uploads/1/3/0/7/130775732/fopeveruw.pdf
    • http://files.eastcoastspeedwaytv.com/uploads/1/3/1/6/131606262/5719794.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/35313313218.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/zusilezojirer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/westinghouse_tv_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/mibewupuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/rapuxibarizipati.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/lakitafobofejukevugududi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4026/0775/files/64274644274.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/lafitozilav.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/fuvenerumi.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_off00007397.bin
697c9fcc539a28cd8adc8623a62281dbce5fe21739c553521d450f5f154c8510		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7397 5000 bytes
font_01_sfnt_off0000848d.bin
4c0e4d70060105d4cbf69732703009448148ca476f30ae0d97a0c361f20a565d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848D 15312 bytes

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