Malicious PDF — malware analysis report

Static analysis result for SHA-256 b241ce5aa24d0624…

MALICIOUS

PDF

51.2 KB Created: 2020-08-01 07:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c67717a1ac2c92c4e07ce9fe627d367 SHA-1: 447c2e1de2e0fb009b23f086d4360a4d4ce33f55 SHA-256: b241ce5aa24d0624072405a36a5fb084d6c25a4475480320a499f7ef0d9a5dff
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=how+to+join+lan+minecraft'. It also contains a PDF link farm heuristic, with many links pointing to Shopify domains, likely for SEO manipulation. The document body text and a heuristic indicate a lure for remote support tools, suggesting the user is prompted to install or connect to such software. No scripts were extracted from this sample.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=how+to+join+lan+minecraft
    • http://files.desigalli.com/uploads/1/3/1/8/131856234/majavejapurod.pdf
    • http://files.penderharbourheritage.ca/uploads/1/3/0/7/130776406/kasodalategoborim.pdf
    • http://files.neowwc.com/uploads/1/3/2/7/132741194/42662.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/favosotir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43034806536.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/vexujodogajivojegurelalax.pdf
    • https://cdn.shopify.com/s/files/1/0440/3966/7877/files/felok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kiragin.pdf
    • https://cdn.shopify.com/s/files/1/0434/8782/1984/files/82079903763.pdf
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/zorerudopovabukaguxetep.pdf
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/34672242565.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/budosixeruzem.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/honda_gcv160_lawn_mower.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_off00007e42.bin
22686eb5a7dd7f18584aeb1c3ddc5b2f6d33ddf095bffb0657c32ff8a6909d93
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E42 4768 bytes
font_01_sfnt_off00008e5d.bin
c11b59dfbc24b9d708ecb0584423f3f21f2ee49555d150fe32352a3fa9564bdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5D 10760 bytes
font_02_sfnt_off0000b201.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xB201 4324 bytes