Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f334d908a825be…

MALICIOUS

PDF

38.4 KB Created: 2020-08-18 15:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3adb44007d37d8df541c794b33e99ad9 SHA-1: 1c482b338513d811066ff44ac4e5da8020e03fa5 SHA-256: c4f334d908a825be05c88317d063e6ae539a2c8a1b64ef3030d099373df414da
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=blood+money+all+songs+free'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role as a lure. The primary intent appears to be redirecting users to malicious infrastructure, likely for malware distribution or phishing.

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=blood+money+all+songs+free
    • http://files.armadilloclay.com/uploads/1/3/1/3/131379312/08b03dc145.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/93115908380.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/98830757573.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/38209832323.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/91801478425.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/ratatapuvevemilisisamila.pdf
    • https://cdn.shopify.com/s/files/1/0438/0105/1293/files/nuzoparuxek.pdf
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/dorei_kishi_seshiria.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/cbse_class_12_accountancy_book.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_off000057f5.bin
aabb0b154bbc5b8ef0ce37c95950804c293681406d18103e7a6d40b4de65692c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F5 5376 bytes
font_01_sfnt_off00006a31.bin
bf6b730846867b6e347a59dfaf373ac162f51af4078c250e100813892a831b35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A31 10268 bytes

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