Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e5a4e1c53b91ee…

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 21:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ac035186cb20b53f913e9731807565e SHA-1: 7d5a89eefbdeffd0a0455062eb6c3593575c7cc3 SHA-256: 48e5a4e1c53b91ee1f499f10f4e8a3d37b21710fbb361cc285e9ea606131204e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=darksiders+fury+chaos+form', is flagged as a malicious redirector. The presence of numerous links, many pointing to PDF files on Shopify domains, suggests an attempt to obscure the ultimate malicious destination and potentially leverage benign-looking domains for distribution. The document body itself is heavily obfuscated and contains metadata related to its creation, but the primary malicious activity is driven by the embedded link farm.

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=darksiders+fury+chaos+form
    • http://files.intparanormal.net/uploads/1/3/0/9/130969728/4762740.pdf
    • http://files.powerlandrealty.com/uploads/1/3/0/8/130815213/3449410.pdf
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/arbitration_act_2020_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0437/6893/8658/files/46605458786.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/vugituvez.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/79564852575.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/110481060.pdf
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/45801009510.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/86748272114.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/51397873692.pdf
    • https://cdn.shopify.com/s/files/1/0431/3438/6332/files/print_website_to_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/mupedanusofemejar.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/pdf_split_merge_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9370/4356/files/53965266012.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3271/files/49226538739.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9401/files/51972365586.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_off0000665a.bin
f7f821ac7ad1db1b1877a51eacd806e5b2e586dd23689c521573f60639ed0b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 5396 bytes
font_01_sfnt_off00007891.bin
022ee1c5478138bff81e11150c04809b5120d5cd9af55d43973e532476bde70c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7891 9680 bytes

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