Malicious PDF — malware analysis report

Static analysis result for SHA-256 a97c651634664b1e…

MALICIOUS

PDF

35.0 KB Created: 2020-08-14 19:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 365c8f7568e6c963ac8f3f60ac8efb50 SHA-1: dfce45ecc0b6f84da2b7aa399183b1e790abd04b SHA-256: a97c651634664b1ea1f9aef40ecdab8496bad339de4a0eb1c9cf461b1db0612f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same redirector URL and a Shopify PDF URL, suggesting a lure to download further content or visit a malicious site. The presence of a 'download button' heuristic further supports the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=dj+bappi+bk+all+song
    • http://files.drakechurch.com/uploads/1/3/0/7/130740349/dekezafowo-nelaxulusa.pdf
    • http://guxekane.thebigbarmitzvah.com/uploads/1/3/0/7/130776760/jomejixuwuzow.pdf
    • http://mopuvovef.heartlandlr.com/uploads/1/3/0/8/130815009/bunozutirasil-jidivug.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5569/files/wizaxowevojubadazode.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/30480490133.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/laruxobo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/junonamivefaziwalewogov.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/xegefuvapupodakedu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3975/8235/files/56767825376.pdf
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/lewawirirubirokekebak.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/tulomukedibewusuluvo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5902/files/49919285872.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/wezirupomolujowar.pdf
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/argonautika_script.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/job_order_cost_accounting_system.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/fesavuvide.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_off00004b7f.bin
c0b15b68e1c6576db6043c0ca759e3814029994976f293f259999e881076683c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5172 bytes
font_01_sfnt_off00005d2e.bin
23770d7f65e733bea885e967e06974bfdef2f2ca563dad82a44606d0e08a9a4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2E 10100 bytes