Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa52aff8ccf80479…

MALICIOUS

PDF

33.6 KB Created: 2020-08-27 17:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e88f24b7241ec6b42205690b7efe109 SHA-1: 9935c84b058802ce4df9a8802d820f0ce5bca682 SHA-256: fa52aff8ccf8047920687f4c97b6f8b39c023529169f1a03f64a6c8d3af6fc52
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=romeo+santos+midi+download+free', which is presented in the document body. This suggests the document is designed to trick users into clicking the link, likely to download malware or engage in phishing. No scripts were extracted from this sample.

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=romeo+santos+midi+download+free
    • http://tapifoj.patriciamauceri.com/uploads/1/3/0/9/130969406/vapimowasavowovebonu.pdf
    • http://talejon.australiasmedium.com/uploads/1/3/1/4/131407227/nurixuxobo.pdf
    • http://files.sagecottagefryerstown.com/uploads/1/3/1/4/131438658/4472981.pdf
    • http://gefata.alisonsowls.com/uploads/1/3/0/8/130814017/1e66b.pdf
    • http://files.singershowroom.net/uploads/1/3/0/7/130738559/degonetesafu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/kozaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/64339411438.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/korefax.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/google_sheets_sort_priority.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/book_of_elijah.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/69009745047.pdf
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/80296032009.pdf
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/tactics_for_listening_developing_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/19979290731.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/bagoxovolavasibur.pdf
    • https://cdn.shopify.com/s/files/1/0437/4354/3447/files/45521754910.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/piladax.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_off0000466f.bin
283ab0f42e1e725cdc6d0544f0c4bb28ae86c7ba838ee772c12435525dad2526		 pdf-font-stream PDF embedded font (sfnt) at offset 0x466F 5152 bytes
font_01_sfnt_off000057ef.bin
3281a353ce2cdf4a85c925e670f4f2e85940305b88023b18e9ba1c905791f8b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57EF 9832 bytes

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