Malicious PDF — malware analysis report

Static analysis result for SHA-256 a654e17ab26442de…

MALICIOUS

PDF

48.1 KB Created: 2020-08-03 22:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad8219cccf81cc88dc04b793bd90016c SHA-1: d93e228dcbb8783f4fa9d27ca2015e3b7fffa81b SHA-256: a654e17ab26442de8dcdd95f19f042146c85f1a660cca356277b353ea1e9e43f
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, which is also present in the document body. This link, 'https://ttraff.com/pify?keyword=online+converter+pdf+to+word+format', is designed to lure users into clicking it under the guise of a download button. The file also exhibits characteristics of a PDF link farm, with numerous links pointing to external resources, likely for SEO manipulation or to host further malicious 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.com/pify?keyword=online+converter+pdf+to+word+format
    • http://files.whiteglovetreatmentllc.net/uploads/1/3/0/8/130815026/xorubulot_kemuzemetar_dokizapi_nopoke.pdf
    • http://files.leannegerich.com/uploads/1/3/1/4/131453146/4566481.pdf
    • http://files.johnpielli.com/uploads/1/3/2/6/132683228/waxijivuvofelox.pdf
    • http://files.allgoodthingsosf.org/uploads/1/3/0/9/130970004/babuvujekufo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/introduction_to_computing_systems_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/3514994546.pdf
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/xegunux.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/65839067746.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/65168553891.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3510/files/39969761564.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/93716806507.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/9268554024.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/jumaxepunofokugezovuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2599/7722/files/tewerodigexurozowobuxet.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006078.bin
26c165e9ae4fdf5ef954db37f7ae8bddc62998d7b8a7b1997344b5c390225a24
pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 5092 bytes
font_01_sfnt_off000071b5.bin
0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B5 6148 bytes
font_02_sfnt_off00008195.bin
8d4d8eb0b98fa10750f70969b1e0e5349f96d55e181774bad4ce6d0dc07d0e63
pdf-font-stream PDF embedded font (sfnt) at offset 0x8195 10280 bytes
font_03_sfnt_off0000a4c8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4C8 4324 bytes