Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ef172b5461d08d…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 10:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0ef3d7ea03627102ea9a74ee88f4ac9 SHA-1: f14f34300721b235e116023c3a190ac38bc88779 SHA-256: f8ef172b5461d08da571060d3cedaa05bd6dcabaf04a83be856e324dcc95391d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a malicious redirector link and a large number of embedded links to other PDFs hosted on Shopify. This indicates a link farm strategy, likely for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=star+trek+online+cardassian+uniform
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/tubufaxuzemilepawosote.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/libuximev.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/64525103559.pdf
    • https://cdn.shopify.com/s/files/1/0461/9013/3406/files/programacion_orientada_a_objetos_java.pdf
    • https://cdn.shopify.com/s/files/1/0429/0697/6422/files/tovepa.pdf
    • https://static.usrfiles.com/ugd/8b9728_1a8e2820c1cb4b438d9d7fff11ad6dec.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b4af1d3e5da46b993c3cdf2095c5294.pdf
    • https://static.usrfiles.com/ugd/b8c837_c76d37e2515a4a21b7f32e3888465f3a.pdf
    • https://static.usrfiles.com/ugd/a59130_fa3b9e050b2849e8a95b719e988ba076.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_a9ae6f48570b48009fd904f6fc9e0e33.pdf
    • https://static.usrfiles.com/ugd/d01287_42e8701e5a4742df99d7b79d432d71c0.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/39329176633.pdf
    • https://cdn.shopify.com/s/files/1/0448/2108/6365/files/destiny_dreadnaught_patrol_guide.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_off00006618.bin
47b7967a7074e8a7e5cc6fecdb2797b4bba2a992a47fccdeabc8efd68677b36d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6618 5332 bytes
font_01_sfnt_off00007819.bin
c534da03ad857d1386b3ea832d7f17324aa31fdbc6d6f6e3df0f555227e86e76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7819 10560 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.