Malicious PDF — malware analysis report

Static analysis result for SHA-256 9153bd4954620ec9…

MALICIOUS

PDF

52.8 KB Created: 2020-08-26 08:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51522be1e76a8ac63356a9e7f13f7481 SHA-1: 896600436b8c46e764230ca664cdf63d29c2df1f SHA-256: 9153bd4954620ec9cb6fa06e3472a03111532aa68ebdd337a7d8b4614e33bde3
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com' with a query parameter suggesting a lure related to obtaining in-game items. This URL is flagged as a malicious redirector. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to distribute malicious content or improve SEO for malicious sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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.com/pify?keyword=how+to+get+knife+in+csgo
    • http://files.suemurrayphotographer.com/uploads/1/3/1/3/131379223/wobobupa_mesibiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/nuburakobufenotomanaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/77557307643.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/15600941610.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/15402471517.pdf
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/72054319008.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/fezunanamuruxavalopulan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/75806492263.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/namobedebatekomili.pdf
    • https://cdn.shopify.com/s/files/1/0437/4672/1946/files/fubumokakiriwetaseri.pdf
    • https://cdn.shopify.com/s/files/1/0465/2197/4934/files/17303613864.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/18106544405.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_off000071a5.bin
9efa6cc8e4880878a86aa4f5569266765d8db4fb94a8c4e4b98c6cfe817ad7f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A5 4828 bytes
font_01_sfnt_off0000824e.bin
962a37c5866f1f9f08596e6d0ea52ee53ea239d82b78bfb31d217e1ac5152c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x824E 15208 bytes
font_02_sfnt_off0000b1c6.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C6 16092 bytes

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