Malicious PDF — malware analysis report

Static analysis result for SHA-256 346e3941c1b3b084…

MALICIOUS

PDF

45.9 KB Created: 2020-09-01 04:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7693378a634e0adc48fe8f0ed0278c35 SHA-1: 0c9b28cbbe8f961e9d451bf714888fe3fdf7d15a SHA-256: 346e3941c1b3b084159ef0049bb124eefbc8d5ba82936e42aa9db47e9945994e
128 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, directing users to 'https://ttraff.ru/pify?keyword=double+sided+brochure+template+word'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs. The presence of a 'download button' lure further supports the malicious intent of redirecting users to potentially harmful content.

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=double+sided+brochure+template+word
    • https://static.usrfiles.com/ugd/e2f7e1_dd460ec1b1b54b5abef52e20301ec24a.pdf
    • https://static.usrfiles.com/ugd/e1d12c_c4f401924f0b490b972228763cd53e99.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d96980ea4e847a6a7880b82de79ca64.pdf
    • https://static.usrfiles.com/ugd/f523c3_bd2d064adeac406b866be04b8d0e5e07.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_f0bdbc820c3c40c2a92313f109e3ffb9.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/36004410801.pdf
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/40644291945.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/duwitufimegirofajorab.pdf
    • https://static.usrfiles.com/ugd/97493d_29230dbe4f924be49c57e2cea9f81e14.pdf
    • https://static.usrfiles.com/ugd/b8c837_40d1519768de4423a4f0c07f2cd1766f.pdf
    • https://static.usrfiles.com/ugd/51c472_e233c79d52e349c89d7e465e4161bfde.pdf
    • https://static.usrfiles.com/ugd/09273f_76482b0a498a41abb95a3f0be4d0909b.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_c83bf837fc8a480f92773dd45385eb13.pdf
    • https://cdn.shopify.com/s/files/1/0437/9957/6733/files/annotate_documents_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/7041/4999/files/lefekikumakagixuvujepasu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9845/files/23965275990.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1590/files/benaboteziwegubugixeri.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/nutatitufatizozo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006732.bin
4aaf835a2228a255700f441ecd442a546bbf70256f4e318bfaae2ac9c9962b2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6732 5320 bytes
font_01_sfnt_off0000794b.bin
2f4a7dacfe174ccab72d239bfb1346762ff16a8096b12d9ed734e5d3125e8fb7
pdf-font-stream PDF embedded font (sfnt) at offset 0x794B 10148 bytes
font_02_sfnt_off00009be7.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE7 4324 bytes