Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c3f083dc72ea56…

MALICIOUS

PDF

35.6 KB Created: 2020-08-02 14:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66dc77728e659536f6798df336d77a46 SHA-1: 13975f37c69ef4f4c233b0f0a36269af62e89cdb SHA-256: d4c3f083dc72ea564ade29b4de6f3839c15e30b5f99d66618b780deecd7d94e4
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used to obscure malicious destinations. One of the primary links, 'https://ttraff.com/pify?keyword=john+deere+4410', is identified as a malicious redirector. The presence of numerous links, including those hosted on Shopify, suggests an attempt to create a link farm for SEO poisoning or to distribute malicious content. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection attempt.

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=john+deere+4410
    • http://files.pennyroyalplantation.com/uploads/1/3/0/7/130776589/7d5c5a.pdf
    • http://files.krptsa.org/uploads/1/3/0/7/130739081/c6590f2af.pdf
    • http://files.tfamcon.com/uploads/1/3/1/4/131437283/8c8b30621.pdf
    • http://files.catalin-jugravu.com/uploads/1/3/1/4/131453595/donebeguj_soramuvej_tuwob_lopuzo.pdf
    • https://cdn.shopify.com/s/files/1/0440/3747/2421/files/69246539221.pdf
    • https://cdn.shopify.com/s/files/1/0436/8501/9801/files/center_div_css.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/busopar.pdf
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/jedogilukojokarojewejut.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/57038671904.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/median_xl_plugy.pdf
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/38672678799.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/44782457504.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/20824727351.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_off00004e10.bin
cee339199e7ea7fd85a775d436cb192e821ac35b0ee3dd003dceb1bb8202ed85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E10 4764 bytes
font_01_sfnt_off00005e44.bin
3ace19202c8949ac265e1656648c9ef8cc9b18f247ccad4509a5cbae0ddf9e48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 10504 bytes

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