Malicious PDF — malware analysis report

Static analysis result for SHA-256 890d0903dcef241f…

MALICIOUS

PDF

50.0 KB Created: 2020-08-18 14:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f0d89defb1f3e5d3bf587c84739d3ff SHA-1: d5c6ffb397b4e77ae7f0b30bf3d8aa42a94c9687 SHA-256: 890d0903dcef241feb422def96feca158d80535f7c5bb13220a45c775e376207
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body text, though heavily obfuscated, appears to be a lure related to "Gchq puzzle book questions and answers". The embedded URLs are likely used to host further malicious content or redirect the user to phishing pages.

Heuristics 3

  • 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.
  • 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=gchq+puzzle+book+questions+and+answers
    • http://files.sandiegobromeliadsociety.org/uploads/1/3/1/4/131411688/d8c6a9f275.pdf
    • http://nubegetom.davidcmahler.com/uploads/1/3/1/4/131482995/6251863.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/gorukixawigowiporudi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/bruce_almighty_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0454/8378/6392/files/asking_questions_in_french_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/34856019847.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/14143916219.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/47828312336.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8519/files/analysing_qualitative_data_in_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0432/7509/2132/files/authenticity_in_popular_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/1_cm_grid_paper.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_off0000752b.bin
3a3cefabbb566b0e2f82def518817e917d52ce3ce07487490ff5891f11d282d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 5548 bytes
font_01_sfnt_off00008811.bin
483658d17c39c745609cc49564cd5a99bea01552cd8b98b32673521361c5fde3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8811 10932 bytes
font_02_sfnt_off0000ad61.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD61 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.