Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5fcaeba69fc2b9…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 09:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51077431a4170e0c42a740230a893157 SHA-1: 06de3bb8f12d86b4ac332c2be24312d2655137bf SHA-256: 8f5fcaeba69fc2b982a2dc284c348a5f8d8edbc8e4ae37afd283e173b8df3222
128 Risk Score

Malware Insights

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

The PDF file contains a lure for 'free online cards games no' and embeds numerous links, including a critical redirector link to 'https://ttraff.ru/pify?keyword=free+online+cards+games+no'. This indicates a social engineering attempt to direct users to malicious infrastructure. The presence of a link farm further suggests an effort to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains the malicious URL and references to a tip calculator PDF, reinforcing the lure.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=free+online+cards+games+no
    • http://files.wadehudson-authorpublisher.com/uploads/1/3/2/6/132681901/cc6fded6b.pdf
    • http://letad.poarc.com/uploads/1/3/2/7/132740669/0e71b6ca2.pdf
    • http://files.southwindkennels.com/uploads/1/3/1/4/131438058/zamudijen.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/tip_calculator_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/wamiwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/ford_mustang_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5842/9089/files/mi_burrito_sabanero_letra.pdf
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/37316102367.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3574/files/92744420506.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/60468176890.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/39600378561.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5494/files/zalekomazeta.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/dowelinogifipazevugowan.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/arduino_basic.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/xaxibokamidaru.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/43780067613.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_off00006023.bin
2e97d676957a371e2004233720b499a2a0ab13bf8173f0b261b1d35038ca076e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6023 5216 bytes
font_01_sfnt_off000071c4.bin
63776fd125d8da8baee82a73f2175c4dcab0f723b4f307c6e917c815ef11704f
pdf-font-stream PDF embedded font (sfnt) at offset 0x71C4 10184 bytes