Malicious PDF — malware analysis report

Static analysis result for SHA-256 8391a022ca8bd39b…

MALICIOUS

PDF

47.8 KB Created: 2020-08-24 04:05:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f35f0e71f49ea7bac08a06532d28af2 SHA-1: 510ae0553c4adc2882c51189326fb20e79d11a0e SHA-256: 8391a022ca8bd39bba5f9e8ec85b4909554fe754473fcf5a5b4cc3539f244113
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bus+stop+movie+naa+songs'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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=bus+stop+movie+naa+songs
    • http://files.hogwashfarm.com/uploads/1/3/1/4/131407247/kepuvisizesopikowozu.pdf
    • http://files.cobusinessadvisors.com/uploads/1/3/1/0/131070115/e9ea4914fa6d.pdf
    • http://files.buildingbrilliantmindsonline.com/uploads/1/3/1/0/131069879/ad2ad83.pdf
    • http://files.fpcchurch.org/uploads/1/3/0/7/130740149/8b3d70341.pdf
    • http://files.discerningheartsministry.net/uploads/1/3/0/7/130775544/5926698.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/xanadu.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/gdpr_article_15_response_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/vevefonoduwaxed.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/mofotodasowejavifoxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/4671822081.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/78081044151.pdf
    • https://cdn.shopify.com/s/files/1/0433/0553/3598/files/59189848834.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/rujatereboluf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/12427777918.pdf
    • https://cdn.shopify.com/s/files/1/0434/0419/8038/files/6th_grade_math_module_3_answer_key.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_off00007175.bin
2bfa2b03405813a7715c51bc01437321d65b5cef4c501556ccddfbc3f8142e62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7175 5120 bytes
font_01_sfnt_off000082df.bin
eaf698fdefaed594eba9f94bb44a244d4f7b6556ddff02507d2d87b17d4111d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82DF 14640 bytes

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