Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1cebacacf396290…

MALICIOUS

PDF

71.0 KB Created: 2020-08-17 07:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6c0687e4abbe0e310299b9b714e33bd SHA-1: b4970a0061147ba71045ed3808e5893445185d08 SHA-256: f1cebacacf396290b799b1c6122d5d796ba984b719d9c9b568f5c6b26e81d28d
130 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on shopify.com, and one critical heuristic firing indicates it's a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=company+tax+rate+2019+form', which is also flagged as a malicious redirector. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.cc/pify?keyword=company+tax+rate+2019+form
    • http://files.eliseprimavera.com/uploads/1/3/1/4/131407299/8101718.pdf
    • http://paloxi.dogologyct.com/uploads/1/3/1/0/131070993/daxidibasu.pdf
    • http://files.reelanimaltalent.com/uploads/1/3/1/3/131378779/mowitejofuvege.pdf
    • https://cdn.shopify.com/s/files/1/0428/2089/4886/files/tasipe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/feverazapuvadibinem.pdf
    • https://cdn.shopify.com/s/files/1/0438/3942/2626/files/valoromujedid.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/lateki.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/vugifafalok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/28961007237.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/dusemepirumudot.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8002/files/49409827480.pdf
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/waves_and_vibrations_physics.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_off0000bb8a.bin
8c7193045f15550b3e2d218bdebd4ea98b0625ea8166049d0c35c6a51906850a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8A 5396 bytes
font_01_sfnt_off0000cdd9.bin
c33f999942ba04da2dd396731303ca3ba110d3c3ba6e2aa2079ca3e410d08d02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD9 13532 bytes
font_02_sfnt_off0000f998.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF998 16144 bytes

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