Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec5efbbf16bbb68f…

MALICIOUS

PDF

69.1 KB Created: 2020-08-07 00:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66559958d478a1f21efc634f5fe44498 SHA-1: 8aa9d8a3fad5d5b061730d23ae7c30dcaa2678ac SHA-256: ec5efbbf16bbb68fdb97a2e17e0546d5a18ea251b2db7a0cb9e3efaddd960ea0
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.cc/pify?keyword=digital+electronics+logic+gates+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The file is a PDF, and the presence of embedded URLs suggests a social engineering attack.

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=digital+electronics+logic+gates+pdf
    • http://files.theheartexhibit.org/uploads/1/3/2/6/132682934/lizugipapoju.pdf
    • http://files.dvaughnpershing.com/uploads/1/3/1/4/131454106/zixojuroxitibe.pdf
    • http://files.hornsbyptsa.org/uploads/1/3/1/3/131379434/bomujakurufilo.pdf
    • http://sazuku.isabelleguzman.com/uploads/1/3/1/8/131871980/firufafiresavot-nusapumowam-zebobi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/62180879340.pdf
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/niselo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/658372908.pdf
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/dudizaxivalamupibixol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/jagozarowes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/zugimafibozexa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/7671404350.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/rainbow_vacuum_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9771/files/fogosuxugavizato.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3019/files/14342068213.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/miburegeboweb.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/35303252321.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad06.bin
374a0ce17fbb7cb442d6c99a757e885d5062e87117fd07396bb5fbc66b65abd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD06 5108 bytes
font_01_sfnt_off0000be6f.bin
a4f689a95b3b7f20c462ff34d4d4bc11e67189fb8c761a4f26b029f22541c75d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6F 10432 bytes
font_02_sfnt_off0000e20d.bin
37cdbacb572bf1a30522647fac3e5a4ec31c9818db390f30b7e491dd9ebec633		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE20D 16668 bytes
font_03_sfnt_off0000f878.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF878 4324 bytes

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