Malicious PDF — malware analysis report

Static analysis result for SHA-256 baac418368bdae5a…

MALICIOUS

PDF

43.0 KB Created: 2020-08-08 03:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b0ff7d570865091cda0ff9a45ca4e80 SHA-1: 51faf2258027a74cc35703e70873762e5f6562ab SHA-256: baac418368bdae5af4ff5316e191c8fe7b91057da69e5f0f478fa1846107eae4
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the embedded links, 'https://ttraff.cc/pify?keyword=asterix+i+obelix+komiksy+pdf', is identified as a malicious redirector. The document's content, while appearing to be comic-related, is a lure to drive traffic to these potentially malicious sites. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=asterix+i+obelix+komiksy+pdf
    • http://files.jordanfamilydental.com/uploads/1/3/0/8/130874156/jalaxafoku.pdf
    • http://files.harvestmooncanning.com/uploads/1/3/0/7/130775596/609543e3e7b.pdf
    • http://files.karensartgallery.com/uploads/1/3/0/7/130739742/dokemuvawog.pdf
    • http://files.madolifarms.com/uploads/1/3/0/7/130740092/4268447.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/jexapogegu.pdf
    • https://cdn.shopify.com/s/files/1/0448/9543/6955/files/capitalism_alone_milanovic.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/36420429625.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/77098926465.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0440/7646/6328/files/tepir.pdf
    • https://cdn.shopify.com/s/files/1/0433/8280/0542/files/volujoruduwixako.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/12809585050.pdf
    • https://cdn.shopify.com/s/files/1/0438/2857/6416/files/xiferokuxas.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/17047850137.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_off00006a6d.bin
daa9bb3793067f1160b990dbd0b62e4fba8d0f1764a325238d958873e3dfdd35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 5340 bytes
font_01_sfnt_off00007c8f.bin
110158c922736299a2401b8a848c4b312b01172d36ba5609d6b90e37407512a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 10016 bytes

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