Malicious PDF — malware analysis report

Static analysis result for SHA-256 e05603d0e577fc87…

MALICIOUS

PDF

56.2 KB Created: 2020-08-30 01:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e35d87c18eadb036c14bf11fe4f26aa0 SHA-1: 4b00aabac9a33205c05e68a688d99f3f65bd899b SHA-256: e05603d0e577fc87de5d3858b40b727ff374acf85a217d6047daf680b3362970
138 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is a strong indicator of malicious intent. The document also exhibits characteristics of a link farm, with numerous embedded URLs, including one pointing to a PDF on Shopify. The presence of invoice and download button lures suggests a social engineering tactic to trick the user into clicking the malicious link. No scripts were extracted, but the primary attack vector appears to be a malicious redirector.

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tu+portal+prosegur+uy
    • https://cdn.shopify.com/s/files/1/0434/9453/9429/files/jitom.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/45060236852.pdf
    • https://cdn.shopify.com/s/files/1/0428/7217/6799/files/ncaa_basketball_rules_2020.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c8f0f166b774fa6be07bed4b8b3d198.pdf
    • https://static.usrfiles.com/ugd/b8c837_5503682375f64e54a3e89ee9cbca0933.pdf
    • https://static.usrfiles.com/ugd/b8c837_decd755ffaf740bcaa3f681a02f97f30.pdf
    • https://static.usrfiles.com/ugd/0049ca_44e0bb809ddd40d9b9008dfb98d18d81.pdf
    • https://static.usrfiles.com/ugd/b8c837_82ca98d220124fa3a1cbac718eb95ff2.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_3f443f7cafef41ad8d27d90c7a5e9f42.pdf
    • https://static.usrfiles.com/ugd/158fb9_5cf1933ca2004e4f9b471b88c6a6e890.pdf
    • https://static.usrfiles.com/ugd/1e32c2_69d700112b40455bbf46afbee8cc8021.pdf
    • https://static.usrfiles.com/ugd/4b874d_2480bf7e73f74cdeadb2a78137290fb5.pdf
    • https://static.usrfiles.com/ugd/4d6844_ce093bb035b041ac83b184fe97ac0935.pdf
    • https://static.usrfiles.com/ugd/bf650e_f00c311fdd924745ac37f1b76522aa44.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075a1.bin
51aed0cf819cc714d6823b457a3b77033cf66786caea684b53ab70d6e4ffd57d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A1 5036 bytes
font_01_sfnt_off000086d4.bin
8a9f5e38bac2b2e8c3d8229c0d50b7f7d61ae9be129d275b6e99d35dc91bc0bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D4 4812 bytes
font_02_sfnt_off000098c1.bin
37ea5c1e4412473d473ae40e3473f8ebf3f5c31b98305c734bccd78566785631		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C1 10280 bytes
font_03_sfnt_off0000bbe3.bin
6ec229c24529a358c131ee313581d0f07f65b4fe3555c9b3ede32f1fcfcfb813		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBE3 16880 bytes

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