Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3948f7951bf5687…

MALICIOUS

PDF

111.6 KB Created: 2020-08-10 13:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b64aeedb092b52141e110128828efaf SHA-1: 122e4e318cbbc0a6614cec7c317dae67cc20a15e SHA-256: c3948f7951bf5687bc6df62b957796f751020980fc715dfcf1dc30d300b26be4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a social engineering lure, instructing the user to install a browser extension or viewer to access content. It embeds numerous links, including a critical redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=chrome+plugins+chromium+pdf+viewer', indicating a redirection attempt to a malicious site, likely to deliver malware or phish for credentials.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=chrome+plugins+chromium+pdf+viewer
    • http://files.winslowschoolofmusic.com/uploads/1/3/0/7/130776110/9942009.pdf
    • http://files.fourpointsinc.org/uploads/1/3/1/3/131379591/bisexej_dugepubig_vovarigenata_jusutarijebupol.pdf
    • http://files.danswell.org/uploads/1/3/0/8/130813612/xefidaton_gixenitanoz_bafigofuner.pdf
    • http://files.angeloflove.net/uploads/1/3/0/7/130739353/7fbdae.pdf
    • http://files.medicinewheelrecovery.org/uploads/1/3/1/4/131407493/wolojejasi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/sibefurejawatunisagixas.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/91807641722.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6899/files/55646978524.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/35843710847.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/58734136758.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bagubiginapir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/75893931458.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/levolexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/wofakedijatokesopis.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/runurogukanetib.pdf
    • https://cdn.shopify.com/s/files/1/0439/4834/3464/files/apprendre_la_conjugaison_anglaise.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/63665901949.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_off000178ca.bin
f84d8b0fe8681a1056cf2810db3e709833d7a1bd6e357a1269c43bc0f7f8641c
pdf-font-stream PDF embedded font (sfnt) at offset 0x178CA 5416 bytes
font_01_sfnt_off00018b27.bin
81a68633da641c505cc3b399d73e535317c194f9823da29f4cb17ad9d07d51e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x18B27 10908 bytes