Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28468811f4cd58a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 18:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73a977d2bc9d09861b5c9bf8133156ca SHA-1: 8de678e005486fa16e5ad084450677d9da3d7622 SHA-256: c28468811f4cd58a096a76f92004353e43a5e89264e9ddda056b4e84986cc4a8
120 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=adyashanti+falling+into+grace+pdf', which is likely intended to redirect the user to a malicious site. The presence of numerous other PDF links suggests a SEO-based lure to drive traffic to potentially malicious content.

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.cc/pify?keyword=adyashanti+falling+into+grace+pdf
    • http://files.worldfestivaloftrees.org/uploads/1/3/0/7/130775371/sufizanewizevej-remewan.pdf
    • http://gelunuv.sandraclarke.ca/uploads/1/3/1/8/131856643/sidabegeweriduxis.pdf
    • http://files.prssasdsu.com/uploads/1/3/2/7/132741535/7751938.pdf
    • http://pebix.joscadenise.com/uploads/1/3/0/8/130814297/zipixijuxar.pdf
    • https://cdn.shopify.com/s/files/1/0448/2197/1104/files/outliers_malcolm_gladwell_summary.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/wokuge.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/abundance_book_by_peter_diamandis.pdf
    • https://cdn.shopify.com/s/files/1/0447/0436/6748/files/kolevamazusuno.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/97210103000.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/17044354411.pdf
    • https://cdn.shopify.com/s/files/1/0431/5175/3380/files/brookfield_viscometer_calibration_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/2670/0696/files/jafunu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/dabavomo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4300/2270/files/couper_un_fichier_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005848.bin
6a5de4910806452afb730991d57ea6c9ecbed80db74ddb5d87fd40bb6adf22c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5848 5296 bytes
font_01_sfnt_off00006a43.bin
d3722ffb716fd61b7a4290b0d4e50520e71ac193ffe097628ce7afdced9b420b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A43 10120 bytes
font_02_sfnt_off00008cd9.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD9 4324 bytes

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