Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0489bf4bed11ead…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 13:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d26d69c765c60b5a88c6b8fca9c00bc SHA-1: 4de0b84a7026f2953bb912753057d4fd8c3363d5 SHA-256: a0489bf4bed11ead3197c26288694f8e7772d75231b1091b3810091653dd3223
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify URLs and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=plague+inc+cheats+android', indicating a lure for game cheats. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation 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=plague+inc+cheats+android
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/nba_2k_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0437/0818/6792/files/acknowledgement_receipt_of_payment.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/85505038162.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/6608785782.pdf
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/15611425227.pdf
    • https://static.usrfiles.com/ugd/72b0e7_7f909232572b46e2b8262e34371bd1c8.pdf
    • https://static.usrfiles.com/ugd/93971e_7089837a28e9404cba929804b0b3f689.pdf
    • https://static.usrfiles.com/ugd/cf14a4_76e9bd3faecc4a4f87567125d0b2b822.pdf
    • https://static.usrfiles.com/ugd/b8c837_956b4bcb422545049caddb2fe0b7163f.pdf
    • https://static.usrfiles.com/ugd/7603ae_ff9ba6fbe62c41a985416eb45d114f2f.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/47899704007.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/51820885950.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_off000064bf.bin
6b8feff546b4abff7f66ed3debf928657796ac76e5eaa9f5e7fc6ace9100f5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 5204 bytes
font_01_sfnt_off00007668.bin
6e2c64d9672bad6243e3e4385b0762499e6c75b2a00a8547e5eddc6e8ae54b45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7668 12644 bytes

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