Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1daf8049fb936f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-10 08:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 492042381549e91d4022731815445a06 SHA-1: baeea9702652097e2656ddfae68fdceac692ef8a SHA-256: 1c1daf8049fb936f28a28ad5315eecae4fb215d53daaaffa276e9a8c0f7364e6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=cadences+drumline+pdf' which is flagged as malicious. This suggests the document is designed to trick users into visiting malicious sites through a link farm, likely for phishing or malware distribution.

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=cadences+drumline+pdf
    • http://files.oberonmassage.com/uploads/1/3/1/4/131408203/bubizes_jalud_busabob_terebutozojo.pdf
    • http://files.woodlandharvest.org/uploads/1/3/1/0/131070207/vumaweniv.pdf
    • http://files.reginaswatercolor.com/uploads/1/3/0/7/130776775/0b1c4f508554.pdf
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/atresia_esofagica_en_el_recien_nacido.pdf
    • https://cdn.shopify.com/s/files/1/0430/3002/0247/files/99162909340.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/67165270064.pdf
    • https://cdn.shopify.com/s/files/1/0429/7244/6873/files/33626727111.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8694/files/44512216324.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/kexebojixuxopigepapekuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/7257/0012/files/background_color_clear_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/botw_title_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/vovalubem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/81497137694.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/tafanaforukudonow.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_off00006049.bin
982049e65de8998f4e8a5f5c95e37016b6d4b7e224a03de3bbdd7599a37079a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6049 5208 bytes
font_01_sfnt_off000071e0.bin
c84062e4f983ae596067f0b2772180217b7f360ca4eab33e04e3cb031894cb1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E0 10524 bytes

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