Malicious PDF — malware analysis report

Static analysis result for SHA-256 9752fa368975697f…

MALICIOUS

PDF

35.6 KB Created: 2020-07-09 23:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb0dce02bb6b414c8f9e16db16841311 SHA-1: b565c2553dc1739dcb92f96677f3673d6e062698 SHA-256: 9752fa368975697f7cc816c06504ed21342328a649b7963f4f8f990a770bdb7e
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to redirector infrastructure. The primary link, 'https://ttraff.cc/wb?keyword=physical%20properties%20of%20matter%20worksheet%20grade%205', is designed to lure the user into clicking by appearing as an educational resource. The heuristic firings confirm the presence of malicious redirectors and a link farm, indicating a phishing or malware distribution attempt. 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/wb?keyword=physical%20properties%20of%20matter%20worksheet%20grade%205
    • http://files.haywardfitnessfanatics.com/uploads/1/3/0/8/130874413/dugen.pdf
    • http://files.marizageorgalou.com/uploads/1/3/1/3/131378816/weben.pdf
    • http://files.bankleysplumbinginc.com/uploads/1/3/1/4/131437699/buwowidemo.pdf
    • http://files.wbparks.org/uploads/1/3/2/6/132695569/bedamufevetir.pdf
    • http://files.creeksideband.com/uploads/1/3/1/3/131384789/3301404.pdf
    • http://files.mrsararadian.com/uploads/1/3/1/4/131453676/725d0ad5d8b20d.pdf
    • http://files.thewordwashing.com/uploads/1/3/1/3/131381640/pemevavuxagarig.pdf
    • http://files.nducuwangugi.com/uploads/1/3/0/9/130969555/gimuviri-megatanizus-selusifo.pdf
    • http://files.yorkiesbydesignllc.com/uploads/1/3/1/4/131406295/nowunewobam.pdf
    • https://dakisil.files.wordpress.com/2020/06/54637999682.pdf
    • https://kolurinitof.files.wordpress.com/2020/07/xewakenowebik.pdf
    • https://wunugevakel.files.wordpress.com/2020/06/37341579894.pdf
    • https://gekaromob.files.wordpress.com/2020/06/rafogejamufojoretogo.pdf
    • https://vanuvawak.files.wordpress.com/2020/07/35614429183.pdf
    • https://daletezafij.files.wordpress.com/2020/07/bimeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xawifakupubegezixezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.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_off00004e2d.bin
9eef0daa8532851720ef08f8ae14c21d771c32c426debe229876f743bf6ae649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E2D 5636 bytes
font_01_sfnt_off00006172.bin
81eeffa400987d9e5047feb8105a0284c209960857e4626480b1abc8cd652ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6172 9312 bytes

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