Malicious PDF — malware analysis report

Static analysis result for SHA-256 2046c6964a593d7a…

MALICIOUS

PDF

45.5 KB Created: 2020-08-20 22:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22cf604433ff175b7d17190d1c53930c SHA-1: 7157fcb0d78b8cc56633f352fddd15c243b19a42 SHA-256: 2046c6964a593d7aa5d209e8db7b38e8e3e6181bb89f6d23c59d287a47c679c9
130 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.ru/pify?keyword=nursery+rhymes+videos+free++for+pc'. The document body also contains this URL and numerous other PDF links, indicating a link farm designed to drive traffic. The presence of a "download button" lure further supports the malicious intent of redirecting users to potentially harmful content.

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.ru/pify?keyword=nursery+rhymes+videos+free++for+pc
    • http://files.sandytoessociety.org/uploads/1/3/2/7/132712127/83e28df9a.pdf
    • http://files.helllomegan.com/uploads/1/3/1/3/131379594/4548844.pdf
    • http://files.oceanfrontsugargliders.com/uploads/1/3/1/4/131407088/12f283.pdf
    • http://files.stain-goed.nl/uploads/1/3/1/4/131452997/larupuvope.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/75679414970.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/59500570572.pdf
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/94699178292.pdf
    • https://cdn.shopify.com/s/files/1/0428/8430/0959/files/41958775537.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/adobe_scan_to_paper_size.pdf
    • https://cdn.shopify.com/s/files/1/0436/5333/3145/files/48898380890.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/44816240118.pdf
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/tafiniparejozixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d7f.bin
177eb3f6cdd922916c91bdcda0ed91270f402ef95a3f516b3a63b8b7c998fb09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 5284 bytes
font_01_sfnt_off00006f6a.bin
ec1893a97662255b723297b3bcc5b436ef519ec5ef78d73bc30613bcbba16366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 10392 bytes
font_02_sfnt_off0000932e.bin
2caecea7945b5e3d5c1abaad0d44196dc34bd52070a68e90e89b4ef474ea0707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x932E 16356 bytes

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