Malicious PDF — malware analysis report

Static analysis result for SHA-256 82ec0f6bfda16151…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 15:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86a1805e3ab0f165af475edb9aa35be2 SHA-1: 591998fd96d00278525542129613225c1c835378 SHA-256: 82ec0f6bfda161518cd881de5cbf1ee1630f8c8ee64a7dc9cb08acc5846599fd
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-driven. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same lure text and URLs, suggesting the primary purpose is to redirect users to malicious content. No scripts were extracted from this sample.

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=slimming+world+free+foods+2020+pdf
    • http://files.yashbangera.com/uploads/1/3/0/7/130738625/83486b04a35.pdf
    • http://files.trails4tailsfest.org/uploads/1/3/1/0/131070918/wululi.pdf
    • http://files.essentially-art.com/uploads/1/3/1/0/131070230/2955867.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/42268954592.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/tuzexak.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/chromecast_featured_photos.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/zudubuwoxojopez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/molopiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/38644121882.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/10001971958.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/gakujakifamewimero.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/62580521914.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/roveriwuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/98020759686.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/95315451996.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/62172504969.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/
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006665.bin
39263ebeded1b7dece8566910f94343a86e1923361e30fc8e0f22bce1206efcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 5620 bytes
font_01_sfnt_off00007984.bin
691beb7e31f5ba6c85dcb7ab378053e4c9af49b7dc968f0a03ec94582925f6d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7984 10588 bytes

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