Malicious PDF — malware analysis report

Static analysis result for SHA-256 b223a956e2fa6e77…

MALICIOUS

PDF

55.6 KB Created: 2020-09-01 00:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc0bc1d4d291a61eb7addabe34724eed SHA-1: f7ed0a48885e9209e9800e6405cd793151baee49 SHA-256: b223a956e2fa6e77c968232b8799e8b0536531162d09d94bec02d5fae6202e56
128 Risk Score

Malware Insights

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

The PDF file contains a lure for a 'confirmation receipt email template' and includes a critical heuristic firing for a malicious redirector link. This link, https://ttraff.cc/wix?keyword=confirmation+receipt+email+template, is the primary indicator of malicious intent. The file also contains a mass external PDF link farm, with the first URL being https://cdn.shopify.com/s/files/1/0431/6043/6887/files/nomofibadelirutabob.pdf, suggesting a broader campaign to distribute malicious content.

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.cc/wix?keyword=confirmation+receipt+email+template
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/nomofibadelirutabob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/64203642033.pdf
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/21889378365.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/wesuterilo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/fixode.pdf
    • https://cdn.shopify.com/s/files/1/0436/5441/4494/files/agua_de_beber_noten.pdf
    • https://cdn.shopify.com/s/files/1/0440/0657/2197/files/44090734205.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/73326677737.pdf
    • https://cdn.shopify.com/s/files/1/0445/9751/0308/files/agrochemicals_market.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/best_5_minute_guided_meditation_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/minecraft_house_roof.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/27838620028.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c15.bin
048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C15 6744 bytes
font_01_sfnt_off00007cfa.bin
902b40456f6e240f479e363a43a8175e872e46130310be16de8ca4c4bcb548d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFA 4888 bytes
font_02_sfnt_off00008d79.bin
4bee1837a11d2846d0113f0dcc0c8102a18f98b6b015da53f3a05b30debc826b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D79 2492 bytes
font_03_sfnt_off00009880.bin
3bb39d9bce29eea7ba7f3c6c9f61868f4ac23ca9af17dbc5ca8797de5b2f6da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9880 10148 bytes
font_04_sfnt_off0000bb66.bin
22e7d64dc2c8c088d80156f018a99e28b724eec794b0a6098809cb3b55e1162d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB66 16184 bytes

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