Malicious PDF — malware analysis report

Static analysis result for SHA-256 2813b2091d4cc3dc…

MALICIOUS

PDF

44.4 KB Created: 2020-08-12 04:23:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f28171835cf1b56f7684c34dc1e8d5 SHA-1: 7ac3584cfdc54960db3c98576d902b8fa4f66662 SHA-256: 2813b2091d4cc3dce2e2acf80bc578f82b5c953c03ae6e8d2c42aba755a3c0eb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented as a 'dnd spell sheet 5e pdf'. This suggests a social engineering attack aiming to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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.com/pify?keyword=dnd+spell+sheet+5e+pdf
    • http://files.cosmokoroly.com/uploads/1/3/0/7/130739084/6434920.pdf
    • http://files.pickeringhardyplanters.co.uk/uploads/1/3/1/6/131607712/2290364.pdf
    • http://files.spencerscustomwood.com/uploads/1/3/2/6/132681884/fakedemetiwojezad.pdf
    • http://files.shinermotorsales.com/uploads/1/3/2/6/132695818/mijudimilawe.pdf
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/alelopatia_eucalipto.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/muwukitateno.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/xugazulevimog.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6040/files/macros_for_roll20.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/67487119156.pdf
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/gorabipigenadutowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/famizimases.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/types_of_cancer_and_their_causes.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/71629191175.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/xapesimobemiguzatudu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8537/9237/files/tutorial_excel_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0081/files/9699954887.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_off0000707e.bin
a3b3218bbd2b71b8a4c6ba0ff41371c99e545e29f3d428f6517041c33d413361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707E 4944 bytes
font_01_sfnt_off0000815c.bin
1ad90d8a818753c0f5ecda970ab9789183f28291cf4ac4353f4cfa71bc666ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x815C 10432 bytes

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