Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46f2f334a8bf4d5…

MALICIOUS

PDF

36.8 KB Created: 2020-08-12 18:24:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e2cfff56e8a21e1e9584cde12e9bae6 SHA-1: 3b0c51cf4382271aad0feaed90f67dc1606bf302 SHA-256: d46f2f334a8bf4d542b7a5697be81a91eddbd0934cd5ae9e36fcf374f1459642
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=classifying+real+numbers+quiz+pdf', is designed to redirect users to potentially harmful content. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains. The primary attack vector appears to be social engineering through a deceptive quiz lure.

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=classifying+real+numbers+quiz+pdf
    • http://files.starclassfilms.com/uploads/1/3/1/4/131406736/lixukibubeluju.pdf
    • http://files.mstoxicgoddess.com/uploads/1/3/1/6/131606092/4625a7f.pdf
    • http://files.yogawithshireen.com/uploads/1/3/1/6/131606349/pavekibitudi_ruxev_xadub_vetomoviximuj.pdf
    • https://cdn.shopify.com/s/files/1/0448/3540/5985/files/human_impact_on_coastal_environment.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/90937308862.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/asma_pada_balita.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/gajubulelirutetimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/57282297096.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/acls_manual_2015.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9567/files/76050516359.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/battery_charger_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0435/3438/5303/files/types_of_assets_in_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0451/0262/9016/files/music_an_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/15550500176.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_off00005132.bin
b972bdfe3335ee9ff943c6c3a2cec0ca7215cc6a31858897363ed51e8effb569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5132 5684 bytes
font_01_sfnt_off0000646b.bin
97883b56b25e39ccd12e1c06d91d81f37ec8bb0dea0109f407c51219922bc934		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646B 10044 bytes

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