Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5d3abdeb914b92…

MALICIOUS

PDF

40.9 KB Created: 2020-08-26 02:13:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55e49720a19985d161f28f51b1e48d4f SHA-1: a8ddc6d3787ab3b911b6b1d0782a1654f38336bc SHA-256: dc5d3abdeb914b92c3812f82daeb2c189407e6df04feee52f7c9f642e82462ea
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=%25C3%25BCnl%25C3%25BC+simyac%25C4%25B1lar+kimlerdir'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, some of which are unknown and potentially malicious. The document body is heavily obfuscated but contains the same redirector URL. The primary attack pattern involves luring the user to click on the malicious link.

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.club/pify?keyword=%25C3%25BCnl%25C3%25BC+simyac%25C4%25B1lar+kimlerdir
    • http://getuzefab.kylespestsolution.com/uploads/1/3/0/9/130969600/zupaveki_xewogomes.pdf
    • http://xugumo.metzteaching.net/uploads/1/3/1/4/131482975/povonibuli_dapadibuxuzidig.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/tuxedewuralurujuzazak.pdf
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/87477111789.pdf
    • https://cdn.shopify.com/s/files/1/0432/9134/5064/files/diagrama_de_control_electrico.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/3433828903.pdf
    • https://cdn.shopify.com/s/files/1/0431/2062/3765/files/25093239194.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/lolutogumopi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/concave_up_and_concave_down.pdf
    • https://cdn.shopify.com/s/files/1/0431/5922/4469/files/annual_report_presentation_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9563/files/94993091481.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/bogobasawukedivexexis.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/9562415741.pdf
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/wipevuwisiziteji.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_off0000603f.bin
a021f58d02662a5394736cf9e6acae149cdb92e620fe3c96cfc9a1595163a57a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603F 5416 bytes
font_01_sfnt_off00007262.bin
2de86a9557ed5ac5a7451885159e7501007c49007b77fb4edde3b31d247d3a8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 11380 bytes

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