Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f185e3530006dce…

MALICIOUS

PDF

54.1 KB Created: 2020-08-12 11:55:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61d28cd6ef12b17d3269a83d82b134f4 SHA-1: 00875ad9af1a67d5cf4b43877ff0ad66814f554f SHA-256: 1f185e3530006dceecc117a1f1999ad007419e8d6f3303e445e7e8d606547882
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=business+proposal+template+pdf'. This URL is presented within the document body, disguised as a business proposal template, and likely serves as a lure to redirect the user to malicious infrastructure. The presence of a mass external PDF link farm further supports a malicious intent to distribute content or redirect users.

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.cc/pify?keyword=business+proposal+template+pdf
    • http://files.elinfinito.org/uploads/1/3/0/9/130968962/gejisi.pdf
    • http://files.hilltopct.com/uploads/1/3/0/8/130873947/pujiwure-wexumefi-xorizinax-duwidal.pdf
    • http://files.camdenauction.com/uploads/1/3/1/4/131406535/1043044.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/xubixebozufuxubur.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/important_physics_constants.pdf
    • https://cdn.shopify.com/s/files/1/0439/2960/0155/files/ghost_in_the_shell_sac.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/prevencion_del_embarazo_adolescente.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/57859962448.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/docsend_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/gubiverazemamow.pdf
    • https://cdn.shopify.com/s/files/1/0433/2440/7961/files/nunusokupizunejupewevifig.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/awakening_the_giant_within_tony_robbins.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/how_to_create_an_excel_spreadsheet_with_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/98334398901.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_off00008bf1.bin
0f906a1419ff0d22a5d5c5ccb2865611dd797e7b50bdd43203bcf4b8a01aeede
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF1 5236 bytes
font_01_sfnt_off00009d97.bin
72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D97 2268 bytes
font_02_sfnt_off0000a7a9.bin
18614507bcee22d4acc4aab21833d68db3bd7e221a4cdb55cfdb4492ffbe301c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A9 10364 bytes