Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52bea1881f1958b…

MALICIOUS

PDF

57.1 KB Created: 2020-08-12 03:28:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76035763f49af3d48280605e4cb2927d SHA-1: 14bb4b0ae7b1cb083da300b55287e97b52735635 SHA-256: b52bea1881f1958b462ca448f11c51dfdfeaf9ac8ac0d208222abb1d4c5818fb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=betel+nut+chewing+in+the+philippines+pdf'. This indicates the document is designed to redirect users to malicious infrastructure. The document body, though heavily obfuscated, also contains the same URL, reinforcing the malicious intent. 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.ru/pify?keyword=betel+nut+chewing+in+the+philippines+pdf
    • http://wudobumaf.thefourwomenblog.com/uploads/1/3/0/8/130814674/e0734aa1.pdf
    • http://fifosed.colintoncottages.org/uploads/1/3/2/6/132682076/pukinaxovuleki-jidiw-nutekimosomanu-nuzufevusu.pdf
    • http://files.humandevelopmentzone.com/uploads/1/3/2/6/132683357/09630004fdbf.pdf
    • http://files.cloudninecuisine.com/uploads/1/3/1/8/131856186/8367455.pdf
    • http://files.bornagaingardens.com/uploads/1/3/0/7/130775640/sigabame-xafijerupixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/45471326056.pdf
    • https://cdn.shopify.com/s/files/1/0429/0274/9347/files/let_s_go_travis_barker.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/chris_p_c3_a9rez.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/basunuse.pdf
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/35604677185.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/79332611502.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/8486758113.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/fukobimanog.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/43802781139.pdf
    • https://cdn.shopify.com/s/files/1/0432/1676/5087/files/lusebavotebetozorij.pdf
    • https://cdn.shopify.com/s/files/1/0431/2868/4701/files/nunenuruja.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_off0000a103.bin
467e67f94258ff4199bac3749f3f88cd092d79e558795a6d1dd5e1ff8ee711bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA103 5252 bytes
font_01_sfnt_off0000b2ff.bin
3ff4946c737cf65856436e543497cb1781bb18f6cb26684c6221b6f2d2a009aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2FF 10568 bytes

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