Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6fc75e74c558218…

MALICIOUS

PDF

51.5 KB Created: 2020-08-30 09:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cf0ade6539eceab7fb4224165e01545 SHA-1: a1b0d2d17f6f6760727eacc02a66d5aebcbed9f0 SHA-256: f6fc75e74c5582184c1254915a95be3523db143ccc7155a26d01400809aed22a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=hey+whipple+squeeze+this+pdf, which is also flagged as an embedded URL. This suggests the primary purpose of the PDF is to redirect users to a potentially harmful external 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.com/wix?keyword=hey+whipple+squeeze+this+pdf
    • https://static.usrfiles.com/ugd/ba3095_d664721426d34fa896d3dd142aba0ac3.pdf
    • https://static.usrfiles.com/ugd/8cbfce_3709fec8db43498c9be073e503dbbf58.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc7aa24064ba448a99e040353308ca38.pdf
    • https://static.usrfiles.com/ugd/41a0b6_bd5ece72e3244ee1a5162471bfde8bce.pdf
    • https://static.usrfiles.com/ugd/625844_7c81bf1670fd4fb88a4a4cbac61905ba.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_a2a0a96dc0b640dcbf897dcf3e97457b.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/gomibapiva.pdf
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/bonoretiwapilesaziwodob.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/runetexupev.pdf
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/63202358498.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/27856793171.pdf
    • https://cdn.shopify.com/s/files/1/0433/3345/1926/files/have_got_anglomaniacy.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/node_js_interview_questions_github.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/bakoburabedudido.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://static.usrfiles.com/ugd/ba3095_d664721426d3

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c00.bin
761e8f87ee83461c383bc28a129464ebd918254f55c54b0c349a07e67c4d7733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C00 5156 bytes
font_01_sfnt_off00009d9f.bin
6d91a8701f5c34eac3d962fe8a064ad12e7c483d3a92295ca6ec6d19c05735c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9F 10332 bytes

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