Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7bc7bcfd23808f7…

MALICIOUS

PDF

111.8 KB Created: 2020-08-01 13:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b48a6128eb13ceb0e775416c25906b2c SHA-1: 8365a9f5c0ed4610586996950b9ea392bdeeb471 SHA-256: d7bc7bcfd23808f75cc2780f11cc4160ed35652aef65971e379eee3986479a3f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1059 Command and Scripting Interpreter

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same URL found in the redirector heuristic, suggesting it's the primary lure. The presence of a 'download button' heuristic further supports a social engineering attack vector.

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=what+is+com.+lge.+launcher%252A
    • http://files.healthwestrealty.com/uploads/1/3/0/7/130776416/a6a5a3e718.pdf
    • http://files.karategma.com/uploads/1/3/0/7/130775341/1707223.pdf
    • http://files.spiritusnw.org/uploads/1/3/1/3/131380297/39f4edb7bba.pdf
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/sawumol.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/kowekuzufefipedewaboj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/99376152244.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gefoviliruvowej.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/bars_and_melody_hopeful.pdf
    • https://cdn.shopify.com/s/files/1/0435/9841/3987/files/sequoya_prep_school.pdf
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/46664091898.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/73597724392.pdf
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/toditorutoxurifolikexuvit.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/sivabitosobulaniv.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/futupasusukenatofipul.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_off00016081.bin
67766494876f3307affb7248ea0a91c4b56c6f2e9c5dd81a858fe0f51b095b0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x16081 5328 bytes
font_01_sfnt_off00017288.bin
84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x17288 1936 bytes
font_02_sfnt_off00017bc9.bin
8193f3a69fdfc33e3ea195866b3d92fc315552ddf43e71439163730ec154db78
pdf-font-stream PDF embedded font (sfnt) at offset 0x17BC9 17460 bytes