Malicious PDF — malware analysis report

Static analysis result for SHA-256 849d4fe326e70644…

MALICIOUS

PDF

36.8 KB Created: 2020-08-21 06:26:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b806ab1ccb0f74354faa4c4466a0758 SHA-1: 86767adff0738654f8f6aa7a33b894cb09db92ce SHA-256: 849d4fe326e70644f82f1395dccb65c9d03123e0d852350422747c8b82ad5bd5
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=space+galaxy+animated+wallpaper++free'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or malware download. The document body, though partially corrupted, contains keywords related to the embedded URL, reinforcing the lure.

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.ru/pify?keyword=space+galaxy+animated+wallpaper++free
    • http://files.chemungfire.com/uploads/1/3/1/4/131454523/0dff161.pdf
    • https://cdn.shopify.com/s/files/1/0438/8497/0152/files/30582708548.pdf
    • https://cdn.shopify.com/s/files/1/0429/4426/6399/files/dusijod.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/komifudilogu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/gelerevorurerof.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/99242724750.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/counter_strike_1._6_original_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/bookkeeping_and_accounting_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0724/files/64809682142.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/wipazimoburer.pdf
    • https://cdn.shopify.com/s/files/1/0440/6896/2469/files/wegurirakawokobajuwaw.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050bd.bin
44ff1f39986d8e8f728e8d898c2ba92326e664f5c808d7a1dca7127f0b0f3835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50BD 5664 bytes
font_01_sfnt_off000063f5.bin
afb658a8b9cba0399e7965a93e8481af93c7fd7db0052377221010a4d4487c27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 10120 bytes

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