Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e8b4b9fd51a46e…

MALICIOUS

PDF

36.0 KB Created: 2020-08-29 03:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe3b5e3228a969cc0e11e6f770e48204 SHA-1: 0ff63be5dcc17e446b076b1d42b69e5bf79e4413 SHA-256: c1e8b4b9fd51a46e7028c40d1543c26a9e03e01005124f86ff6513544be8f595
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=casa+reposeidas+baratas+em+porto+ric'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a Shopify URL, reinforcing the malicious intent. The primary goal appears to be directing users to malicious infrastructure via the redirector.

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/wix?keyword=casa+reposeidas+baratas+em+porto+ric
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/26449855163.pdf
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/brihaspati_dev_ki_aarti.pdf
    • https://cdn.shopify.com/s/files/1/0434/1851/7665/files/sitoxuwivabaxiwek.pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/adventure_island_game_for_windows_xp.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/gibekaxekajosumagif.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/bexomalolozulotitad.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/foxovujese.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/luigi_s_mansion_iso.pdf
    • https://cdn.shopify.com/s/files/1/0461/9898/0757/files/dallas_isd_benefits_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/alta_idade_media.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_off0000436c.bin
d530daa7f8c62807fde86eb51b0b99b4f04f3ad93d7d63a3105888df07235635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x436C 5232 bytes
font_01_sfnt_off0000550d.bin
c42608801c00af26808d9d24f937d61cb227f3ba8be82a5cc52e19862571b564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x550D 15524 bytes

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