Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3ad698f23c21d5…

MALICIOUS

PDF

33.1 KB Created: 2020-08-02 06:20:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8edf83a5cd64bb9f1e0749743188b326 SHA-1: 63ded21adce8dfebe38a83b65839cb4244fe28c9 SHA-256: 9e3ad698f23c21d56768f22897d84e53e7a955c3a20d9ed0ac63aa8734019301
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at `ttraff.cc`. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the URL `https://ttraff.cc/pify?keyword=bowflex+manuals+pdf`, indicating a lure to download potentially harmful files disguised as manuals.

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=bowflex+manuals+pdf
    • http://files.intentionalenrichment.com/uploads/1/3/0/7/130738875/7220433.pdf
    • http://files.iowacivilwarhistory.com/uploads/1/3/1/8/131858916/d16e1b81041b53.pdf
    • http://files.topcheesesteaks.com/uploads/1/3/0/8/130813885/jawupep-dobopafogajene.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/10121107590.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/d_d_monsters_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/setonok.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/sibug.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/96315584731.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/tumimevavotomadogizo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/22866306099.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/45371267488.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/38000874191.pdf
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/87204437078.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/guzalevijus.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_off0000459f.bin
5af5556eff40f7633db8668210e5eb7774af7101d9b72bc64da20683288a52f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x459F 5300 bytes
font_01_sfnt_off000057b1.bin
f77bcccdc025b4860bf36b9c97e2a0b2d5769d7756b7e9c60e75dde4a0091176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B1 9492 bytes

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