Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d0c84f51c80d48…

MALICIOUS

PDF

37.8 KB Created: 2020-08-12 19:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b3e39e300a07cb88009a164897ffddb SHA-1: 07decdfd5a10f9123b83394981c720f21e62dbc9 SHA-256: 44d0c84f51c80d48d7e82ffb5c1de31a868388dae8eb27eecb8352b8e559c1d3
120 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 external resources, a technique often used for SEO poisoning or to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.cc', which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to download a PDF that ultimately leads to a malicious site.

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/wb?keyword=sangharakshita%20dhammapada%20pdf
    • http://fesobuk.the18thmasonicdistrict.org/uploads/1/3/1/3/131398368/785f7e9603edc.pdf
    • http://rozukul.samuimensspa.com/uploads/1/3/0/7/130739678/jalagosurofesav_sapigavifodeva_rabivo_diweloxekuxuwix.pdf
    • http://files.redilamp.org/uploads/1/3/0/7/130775952/noloxerekap.pdf
    • http://files.maltatangsoodo.com/uploads/1/3/1/4/131483317/wemode_mesufodub_jemufin_wululi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3547/5624/files/58950054257.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/blade_dancer_lineage_of_light.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/93994890774.pdf
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/faziwudumorojolufajesen.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/inventor_3d.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/coveted_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/nba_2k15_xbox_one_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6124/files/xedodofemizipifajepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zukax.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/43562035680.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/recommendation_letter_format.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_off0000542d.bin
2e630c31e245735ca9019e03afa6dcebd8d8269c87a825f94450ff955a59155c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x542D 5592 bytes
font_01_sfnt_off000066f9.bin
def5daaa8da13bdda45e14c6446e7e2d8b56b441553e43c3773f551dbde8b7cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 10308 bytes

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