Malicious PDF — malware analysis report

Static analysis result for SHA-256 276eb83fec24cc4d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 06:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a22048904ac913a1fed26d17dd7e84e3 SHA-1: f2d87a49bd2e4171f8d34325cf072d9f59bb3e3b SHA-256: 276eb83fec24cc4d228cb87551640b6da7f9b59a3ebc6ec5d804479a1ea04534
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm and a specific link to a redirector, indicating a social engineering lure. The heuristic 'SE_BROWSER_INSTALL_LURE' confirms the document's intent to trick users into installing something. The primary malicious URL is https://ttraff.com/pify?keyword=twitter+video+firefox+extension, which likely leads to further malicious content or malware.

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.com/pify?keyword=twitter+video+firefox+extension
    • http://files.shoreexcursionspuertoplata.com/uploads/1/3/2/7/132740620/pinupivuvojujoxa.pdf
    • http://files.catherinehessart.com/uploads/1/3/2/6/132681851/495fb5e.pdf
    • http://mapob.radiopigs.us/uploads/1/3/0/8/130874482/d7949aeb686.pdf
    • http://maravifo.sassyarabia.com/uploads/1/3/0/8/130874426/2567911.pdf
    • http://files.seymourcoc.org/uploads/1/3/0/7/130739802/6405797.pdf
    • https://cdn.shopify.com/s/files/1/0437/0461/5066/files/pivowikitasepejafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/pdf_to_editable_word_document_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/mejalewobigavinisavasebop.pdf
    • https://cdn.shopify.com/s/files/1/0441/0313/9480/files/wasax.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/26843091871.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.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_off000062eb.bin
6b5828932a6204cd389ac7919d453ce8f45a9d0f77765834bee5a26a0f8882e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 4828 bytes
font_01_sfnt_off00007384.bin
329314dc39681198db1a4ebabc718327f69d628395243ff0d34dc77388681b80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7384 10472 bytes

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