Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde18a051fd37ad1…

MALICIOUS

PDF

33.9 KB Created: 2020-08-19 03:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f818aadc5523f7205665412c0a594d SHA-1: 08cc6850a0e648408c467ea11a7c1768484201ab SHA-256: fde18a051fd37ad147ce1b8e232b21adf7ef77ec7cfc880277780c3ae2992d62
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on cdn.shopify.com. The primary malicious URL is https://ttraff.com/pify?keyword=black+clover+wallpaper+4k+android, which is likely used to redirect users to further 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.com/pify?keyword=black+clover+wallpaper+4k+android
    • http://files.cell-tissue.com/uploads/1/3/0/7/130776511/18b79af7e9.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/fenirenokeguzom.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/asiaticoside_40.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/20115743121.pdf
    • https://cdn.shopify.com/s/files/1/0441/2401/2696/files/scrape_google_images.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1032/files/black_headed_ibis.pdf
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/curso_de_violo_em.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/fuzuvapekijazawin.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/zivamokuzusu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/monthly_horoscope_app.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_off00004698.bin
2981f503629acc0ba6efb3032064eac819bc47f6b9ccb959903e095a9b8e66f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4698 5244 bytes
font_01_sfnt_off00005893.bin
a819d2287d99e254b41e3fe214455387e97d088950a407633c3e1b1cd8a41240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5893 10280 bytes

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