Malicious PDF — malware analysis report

Static analysis result for SHA-256 51528eb30b47b319…

MALICIOUS

PDF

40.3 KB Created: 2020-08-14 18:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d36c2d7282dc7a26fc25d69e7b2fc8 SHA-1: 79a369aa6924c8b84033b80a304ecf7021f80c0d SHA-256: 51528eb30b47b3196928e18272eecd62cdbb8e4dcfa07eee9c773461a24a7308
120 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to traff.com, which is likely used to direct users to further malicious content. Additionally, the document exhibits characteristics of a PDF link farm, embedding numerous links to external PDF files hosted on Shopify. This suggests an attempt to manipulate search engine rankings or distribute content through a large number of seemingly benign links.

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=lagu+hanya+rindu+tami+aulia
    • http://files.alissaellisphd.com/uploads/1/3/1/4/131452827/844207.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7776/files/pofupudifiramakipoxus.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/34778629021.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/pilifutalikinofimaroj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/10513730422.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/91131276637.pdf
    • https://cdn.shopify.com/s/files/1/0432/9721/0532/files/duxegenikan.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/xagef.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/jipuvefumiwogugujejivufe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/43203084622.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/76863811440.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_off0000422c.bin
2f7ce1b95fec55cfa2726d16adcda950a7e0444c1de2785a9955690b87ba196d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x422C 4756 bytes
font_01_sfnt_off00005219.bin
ee5a992bfb62e9b5d6fbc5d46f0d195cc078eb6e66b16dbe2ef7c42309872fb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5219 8912 bytes
font_02_sfnt_off000070cf.bin
f04fb96856fa86c99babb5bf309615b780632e07d2318923ed038a7bfd4fd4ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CF 16204 bytes
font_03_sfnt_off000085fd.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85FD 4324 bytes

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