Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4408c01f0944f7…

MALICIOUS

PDF

56.0 KB Created: 2020-08-30 04:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 438f70057e92c93c5324c8e7caee8648 SHA-1: bcca0b0c7b45053a39ff55cb2233fe0b18a3076f SHA-256: 9f4408c01f0944f7ff01f8934bb309efe4b2ae71497875cf301684181283b0b6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.me/wix?keyword=level+70+striking+dummy. No scripts were extracted, and the document body is heavily obfuscated.

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.me/wix?keyword=level+70+striking+dummy
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/negefesapevedumar.pdf
    • https://cdn.shopify.com/s/files/1/0437/0530/3205/files/acoustic_neuroma.pdf
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/gubepogutevote.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/wekamituju.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/bubepapekomo.pdf
    • https://cdn.shopify.com/s/files/1/0464/6676/0856/files/26040670232.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/neil_gaiman_american_gods_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/banking_service_chronicle_monthly_magazine_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3545/7696/files/xenoblade_chronicles_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7495/files/6144709965.pdf
    • https://cdn.shopify.com/s/files/1/0432/8783/8886/files/kugewogobozo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/39982163221.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/zeta_addressable_fire_alarm_system.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_4d126ce7cb4f4a0b9a47ad9fd1a4ac47.pdf
    • https://static.usrfiles.com/ugd/58a813_056f4a1d5fc14166a4b0c7881f8b677d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1af16ffb28e6454c916cbb9a6fc20157.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_off00009da5.bin
5810f913deb8ea12829d81c01db5142d4f9e76e916c85e675854caad9321fc3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA5 5324 bytes
font_01_sfnt_off0000afbb.bin
831d5346e436a9e2a3c6ec8492ed6c3a8ae7368601415063b54961d7c28a6cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFBB 10492 bytes

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