Malicious PDF — malware analysis report

Static analysis result for SHA-256 f251168431969e05…

MALICIOUS

PDF

47.2 KB Created: 2020-08-22 07:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f6900b478c63973beb7d15ba077c454 SHA-1: 74f0b3b58f221d816692bdc6ca17dd3b5a98d029 SHA-256: f251168431969e05a4a386054bbd6bdfafa1d085f58d93d1235a21eee538b68c
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm, which is a technique used to artificially inflate search engine rankings or distribute malicious links. The primary malicious URL, 'https://ttraff.ru/pify?keyword=america%2527+s+got+talent+template', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a lure to disguise the malicious redirection.

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=america%2527+s+got+talent+template
    • http://talid.sacredsantafe.org/uploads/1/3/1/1/131164250/3b971.pdf
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/ashrae_handbook_of_fundamentals_1997.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/26429215403.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdf
    • https://cdn.shopify.com/s/files/1/0434/2752/8871/files/baahubali_film_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6079/files/56088320919.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/9253475812.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/bovekopalikipomuxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/lelukininodonipisi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/kotaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/7339/6133/files/lepepijotur.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_off00007a1b.bin
01fbb5bc44b48e4bf9d751c494e648ca8f7f62d4015314e549ee98c4462fffcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1B 5276 bytes
font_01_sfnt_off00008bef.bin
3e0f19c80ae6de83d04671507c165ad474bc5e856acbffeb7515691bc4a90724		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEF 10668 bytes

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