Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d682321dcf4695b…

MALICIOUS

PDF

46.7 KB Created: 2020-08-31 13:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c9baf3506ede288fa55fb0637a9b9ab SHA-1: 960ae4c2aba1f3b4f06e5bf9e14d66126fae1335 SHA-256: 3d682321dcf4695b819ea2ba9faf58fdb6c5bf1f37daf74f232295e5adb010eb
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a tactic often used in SEO poisoning or link farm schemes to drive traffic to malicious sites. One critical heuristic identified a PDF redirector link pointing to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to this malicious site, likely for further exploitation or phishing.

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/pify?keyword=pursuit+of+happiness+movie++in+english
    • https://static.usrfiles.com/ugd/0cd3a8_e7859e94ecad4de6918a4d9210d6dafe.pdf
    • https://static.usrfiles.com/ugd/917232_6034bbc160a044ffa58ce0bc25cbad92.pdf
    • https://static.usrfiles.com/ugd/b8c837_87867f904f92416a971679d2d6c552c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_97ae035b272045479be49a6e15ce87e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa4e1d730bb54bb183730743fb3ae968.pdf
    • https://static.usrfiles.com/ugd/99a8f2_6824261ad555461099f6a9888735bf2e.pdf
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/69998525055.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/66922782743.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/92660342010.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/vulesusitorezajetageg.pdf
    • https://static.usrfiles.com/ugd/badafb_148398ef48204273ab4eccbf4aa3e672.pdf
    • https://static.usrfiles.com/ugd/b8c837_63d90ac156de4c11bdc0aa0bbbf60d20.pdf
    • https://static.usrfiles.com/ugd/b8c837_29e5d4c05720453e9c6e518904891e01.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_off000077a0.bin
7b4361ed8bccf357dac0d9b42dfc741309c726a06f8fba0375300e961be54d25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A0 5376 bytes
font_01_sfnt_off000089cd.bin
27e6931bbaf95dc6138940978090579832ee70aeb7be9f9fe4099bfff38c3397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89CD 10608 bytes

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