Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b117f86df6f4414…

MALICIOUS

PDF

59.2 KB Created: 2020-08-23 11:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d29ade5ea878672e08d7805bae36a8 SHA-1: c8b66ec73c5d1d80e2576ac59b2a665d495b0666 SHA-256: 2b117f86df6f44145ab997b70764fb34ae738604ecef26a0161dae0bd85f9795
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with many links hosted on cdn.shopify.com, suggesting a broad distribution effort. A high-severity heuristic indicates the document explicitly instructs the user to copy or paste content into a shell context, a common lure for executing malicious commands. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=datepicker+format+react+native', is likely the initial stage of a download or redirection chain.

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.ru/pify?keyword=datepicker+format+react+native
    • http://files.kimripleyobrien.com/uploads/1/3/1/3/131397960/5868244.pdf
    • http://pubaxuver.charmedbordercollies.com/uploads/1/3/0/9/130969317/036d2169d834.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/64473186716.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8998/files/chemistry_book_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4567/files/tunazedotabedi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/47442399424.pdf
    • https://cdn.shopify.com/s/files/1/0431/2304/8610/files/peter_pan_real_story.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/xujub.pdf
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/samsung_tv_catalogue_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8029/4298/files/62892026162.pdf
    • https://cdn.shopify.com/s/files/1/0435/7718/0328/files/pdf_annotator_7_review.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/jaregasesojijebatawelok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/12556951021.pdf
    • https://cdn.shopify.com/s/files/1/0434/5934/6582/files/13010404078.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/
    • https://cdn.shopify.com/s/files

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007885.bin
91a03372f6533a76fdd3e5083c18134cb05f0107257b89f8d8887beb3229949a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 5076 bytes
font_01_sfnt_off000089b8.bin
97f032e2f9f41f79ccd6a7afeb298f286ca583d9382072f41fd6cd3103d5d427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B8 8176 bytes
font_02_sfnt_off0000a340.bin
83c20295cff226a4e66e3c2c4be263f02639241b145fba29e8b6e1918e07a1e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA340 11120 bytes
font_03_sfnt_off0000c97d.bin
73bb1f519e29941fc98367ae33a8b679223d41029fbf73fb5c585da9ec8c2502		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC97D 16204 bytes

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