Malicious PDF — malware analysis report

Static analysis result for SHA-256 d33a2c309e106211…

MALICIOUS

PDF

43.9 KB Created: 2020-08-23 03:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebda354a33232a2edf0512a0f4106aba SHA-1: a6c1c026609c9fb4aabd8e158b6ae738d017fc69 SHA-256: d33a2c309e1062111f62f0ec558b288577f56ebdaf66d1261863748b7481bfc8
130 Risk Score

Malware Insights

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

The PDF file contains a high number of external links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=hd+background+photo++for+picsart, is identified as a malicious redirector. The presence of a visual download button lure further supports the malicious intent, suggesting the document is designed to trick users into navigating to malicious infrastructure.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hd+background+photo++for+picsart
    • http://files.kevinryan223.com/uploads/1/3/2/3/132303353/5173073.pdf
    • http://retik.newthingsshopnc.com/uploads/1/3/0/8/130874368/7851644.pdf
    • https://cdn.shopify.com/s/files/1/0437/2060/5850/files/caballo_de_troya_6_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/92051542055.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/522859389.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/37867469008.pdf
    • https://cdn.shopify.com/s/files/1/0465/5372/7126/files/87360298559.pdf
    • https://cdn.shopify.com/s/files/1/0465/4684/5854/files/vukavor.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/uttar_kand_ramayan_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2614/files/vobudeluxag.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/30959578146.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/votabimubufipirabi.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_off00006599.bin
6ceb04f717a6b5946929ccf38ddec5a6b00331fa457934ebe9f9594452db3409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6599 5548 bytes
font_01_sfnt_off0000786e.bin
c6ad80c99ce02a1c3a3bd2f66c2a05de804e683710d7e1972dd1445cfac456da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786E 13132 bytes

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