Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd034aa461bcd56…

MALICIOUS

PDF

36.1 KB Created: 2020-08-30 07:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e38a492256b13544023c91b4c1e6f04 SHA-1: 2fad50fbb266a7df3c0c869c63d667d5a6957d32 SHA-256: bdd034aa461bcd563deb1766586f7e5b9e6bac05d24bc1677b632032803ea68c
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/wix?keyword=rocky+mountain+supply', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links hosted on Shopify, suggesting a lure mechanism. The primary attack pattern involves redirecting the user to malicious infrastructure.

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.ru/wix?keyword=rocky+mountain+supply
    • https://cdn.shopify.com/s/files/1/0434/1635/4978/files/livre_anatomie_du_corps_humain.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/66380557272.pdf
    • https://cdn.shopify.com/s/files/1/0459/6229/7503/files/antes_de_renunciar_a_tu_empleo_audiolibro_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/sotofisedur.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/temekakupefamubutifuxugu.pdf
    • https://static.usrfiles.com/ugd/f4de5e_86b3ceec758e40d8841d57aa51879136.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_60306df71f5d437fa97f9d6f7f96f517.pdf
    • https://static.usrfiles.com/ugd/d1d005_b1ddff4acf0c4ed9845810b5400d7890.pdf
    • https://static.usrfiles.com/ugd/5ed537_07ae6340909c4cfab9939fab9c6a6ca1.pdf
    • https://static.usrfiles.com/ugd/b8c837_2118bb7747e146ccbc5113a3c7f1e372.pdf
    • https://static.usrfiles.com/ugd/48d9a1_5a13fe0c72ce42e1b1bbdc7ff9d51618.pdf
    • https://static.usrfiles.com/ugd/93c935_297b81ae47a84203bd94deb111ec2c68.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0391/files/3603645259.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/vokifebefu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/58140995184.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_off00004481.bin
3d8a9404079871c6290bf82702fb71934435c9fa7da4e091cf50d6808d526eb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x4481 4920 bytes
font_01_sfnt_off0000552c.bin
26e0ba8ededa2ce175501b952bde5113f302b23a2a49a5fc85b2112bf6286692
pdf-font-stream PDF embedded font (sfnt) at offset 0x552C 9600 bytes
font_02_sfnt_off000075f2.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x75F2 4324 bytes