Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ac826d11180c8f…

MALICIOUS

PDF

36.1 KB Created: 2020-08-21 21:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42c7dea5329a3c3e7c51254f064566cc SHA-1: f0ea1dc7f6e6e59ed390fcef44d71cab65d0d0b4 SHA-256: d6ac826d11180c8ffca96ca23fef88b30c4c689b5166f9a58f1032f269149ae0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.cc' which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking URL, suggesting a lure to trick users into clicking the malicious link. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm SEO strategy to improve search engine ranking for malicious content.

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=cg+comedy+video+free++mp4
    • http://mumujen.myroncotton.com/uploads/1/3/1/6/131636612/gonavojesawoluzet.pdf
    • http://doboza.mauirunning.com/uploads/1/3/0/7/130775997/daxarejokoze.pdf
    • http://vasetaz.carriebeleno.com/uploads/1/3/0/7/130775291/lurexobimuxor_zarujadamivipu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/tamil_new_movies_free_tamilrockers_2019.pdf
    • https://cdn.shopify.com/s/files/1/0438/9843/7784/files/42906423277.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/62213927120.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/kizubibijag.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/letozigopotopebufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/85483008897.pdf
    • https://cdn.shopify.com/s/files/1/0435/2435/8298/files/58239059365.pdf
    • https://cdn.shopify.com/s/files/1/0434/4109/4812/files/wugumovonuwajomigodepewi.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_off000050e6.bin
1eb77eb23eace1531ef15aa5051d1203e2d56969fffdcc8f490cb7f1469874a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E6 5208 bytes
font_01_sfnt_off000062a0.bin
199df1bf8f12b04a4d6166b5b43b9422fedca3145cb3c70c12d2aa53b40ca7a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 9780 bytes

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