Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b0d685c10afb88…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 17:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8acff6d1c18c1b4317191fcad01554c8 SHA-1: 1bcfa0c1b7f34d4b59ba428352a1921fe4a7b20a SHA-256: a0b0d685c10afb888e45e60f18cccde06555bb129fc84094c72dd3d343c85721
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=and+install+appium+in+ubuntu'. Additionally, it exhibits a high number of external PDF links, with one hosted on Shopify. The document body also contains a lure instructing the user to copy and paste content into a shell, indicating an attempt to trick the user into executing commands. 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=and+install+appium+in+ubuntu
    • http://files.linhr.com/uploads/1/3/1/0/131070189/tabotusatoboza.pdf
    • http://files.fayslsdrivingschool.co.uk/uploads/1/3/0/7/130776073/8195537.pdf
    • http://files.napavalleyartworkshops.com/uploads/1/3/2/7/132740670/126b119acd.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/69114526111.pdf
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/gutovisir.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/kodukidulisexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/compress_mac_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/90242441382.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/finoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/cardiac_surgery_certification_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/kuxuwejurizaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/xenep.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/91580758465.pdf
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/33958275636.pdf
    • https://cdn.shopify.com/s/files/1/0438/0760/4896/files/51708801585.pdf
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/xunelifoganel.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_off000062b3.bin
f57f9f8f653b328181161361f4bbcada034fd2a8141a986119d053f099cbf1b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 5136 bytes
font_01_sfnt_off0000740a.bin
44b375a6992d61b530b1c1eccb06a67589e6309a1d205c1ecef405e7b38a103f
pdf-font-stream PDF embedded font (sfnt) at offset 0x740A 10272 bytes