Malicious PDF — malware analysis report

Static analysis result for SHA-256 592bfc9f8ffbc98f…

MALICIOUS

PDF

36.4 KB Created: 2020-08-21 17:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1c51917c10f4a39a7ae01ad257f3468 SHA-1: 8d24ca1c477bd4f9702d4286873b2c32bc21c7a6 SHA-256: 592bfc9f8ffbc98f25f2294d76e8b31eaf7d7ffa519e9850c551de8cedda0476
130 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The presence of a 'download button' heuristic further supports the lure mechanism. No scripts were extracted, but the document body and heuristics indicate a phishing attempt leveraging a fake download lure to redirect users to malicious infrastructure.

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.com/pify?keyword=frayer+model+template+microsoft+word
    • http://files.tapout2her.com/uploads/1/3/1/4/131406799/tokesijonimivate.pdf
    • https://cdn.shopify.com/s/files/1/0435/5060/5461/files/livaganugemadekenofojovaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/0467/2675/files/gudovomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/70487592622.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/wekava.pdf
    • https://cdn.shopify.com/s/files/1/0436/1568/2717/files/chevrolet_traverse_2014_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7974/files/xavukezatezeka.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/80004700862.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6924/files/descargar_antecedentes_disciplinarios_en.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/89657027666.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/1245562898.pdf
    • https://cdn.shopify.com/s/files/1/0429/4128/4518/files/borderlands_3_ps4_pre.pdf
    • https://cdn.shopify.com/s/files/1/0440/2174/3781/files/scp_cb_ntf_mod.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_off00005030.bin
9f23770b1b44b3a9711929a7b2f530b8e80844cb14d78615515826ec549e9d79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5030 5448 bytes
font_01_sfnt_off000062c3.bin
363ba0cc0611f55f0e429d163409437c07cdc29c5684ecdf15c5838c36b4f7a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 10076 bytes

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