Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d2297f20460277…

MALICIOUS

PDF

38.1 KB Created: 2020-08-13 23:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b616f66648cb10a668fae902e39890f SHA-1: 1d900f2e08120391305884804fee1335befda08e SHA-256: 27d2297f20460277f7f792362344ce5983dd3d138f300f7bb90ad17b414e3114
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains hosting other PDFs, suggesting a link farm or redirection scheme. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'amapiano remix' and the malicious URL, indicating a lure to potentially 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.com/pify?keyword=bamthathile+amapiano+remix
    • http://files.chianannlu.com/uploads/1/3/1/3/131380985/07ab156fe366555.pdf
    • http://files.spins-uk.net/uploads/1/3/1/6/131637889/diger.pdf
    • http://files.booksbymarilyn.com/uploads/1/3/0/7/130740062/varin_tudewefaboxo_jutemane_lekiviperumile.pdf
    • http://daroboj.redcoaching.co.uk/uploads/1/3/1/8/131871991/3329421.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7629/files/rotaxukevanivowanufenogab.pdf
    • https://cdn.shopify.com/s/files/1/0436/9373/6089/files/konulatisex.pdf
    • https://cdn.shopify.com/s/files/1/0430/9919/3501/files/20291213208.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/30470355143.pdf
    • https://cdn.shopify.com/s/files/1/0432/1335/7211/files/79611483499.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/laxexowuwekejurawu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/gagixezutimajazudu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9213/0458/files/74307302423.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/95662575268.pdf
    • https://cdn.shopify.com/s/files/1/0431/2753/7828/files/paxegapukuwupesazatuvena.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/opera_hotel_system.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.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_off000058f8.bin
3edf5a27bed8c4e011dae8cad92504ff481124a2815d4921009f4da8e2c558ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F8 4996 bytes
font_01_sfnt_off000069cc.bin
36df95eafead415f6b8fcb7db9f8bd22d8e6439e67f2538249a9d068edbc0eea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CC 9888 bytes

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