Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2819a130fb349fe…

MALICIOUS

PDF

44.5 KB Created: 2020-08-03 01:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ff0497215cf4efa73f4041bf62d006d SHA-1: c8778db7ee6cafe27678e0356eb5bc380151e239 SHA-256: c2819a130fb349fea31b1065ceae9c17350a99c4a2f069b4ed5ae84b3835194f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=morrowind+release+date', indicating a lure related to the game Morrowind. 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=morrowind+release+date
    • http://files.nesmun20.com/uploads/1/3/1/4/131437599/rolagidojoto_nesote.pdf
    • http://files.lifebuilderstc.com/uploads/1/3/1/3/131378993/xexabi.pdf
    • http://files.ultimatesyntheticlubes.com/uploads/1/3/1/4/131437139/narit.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/loxepavev.pdf
    • https://cdn.shopify.com/s/files/1/0440/5365/9798/files/19640709738.pdf
    • https://cdn.shopify.com/s/files/1/0428/6277/2380/files/59544407381.pdf
    • https://cdn.shopify.com/s/files/1/0431/7587/0630/files/24166674586.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/lezazazowujanu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/32790895448.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1792/files/fanedebavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/81908026.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdf
    • https://cdn.shopify.com/s/files/1/0439/1868/8424/files/88678521769.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerivavegexem.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_off000071ac.bin
68dda1ad15828a700f351e0f79ac55aa39b29ee0006030b3d871087130eea5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AC 4916 bytes
font_01_sfnt_off0000828a.bin
b370a125738a7c655fa3204e1f405c6d6de752a3dbcfe75f1b86c0943442a761		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828A 10180 bytes

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