Malicious PDF — malware analysis report

Static analysis result for SHA-256 9363b3fde5011f8f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-24 10:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6acf9ff16a62170052bdbeebef397b6b SHA-1: 97f487a1bdbe9236e2893ebb7931bf5aa98f50bc SHA-256: 9363b3fde5011f8f6e54cb0dca966a0a75eed51720553c6e5e1b0ab4d0e19ff5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it's a malicious redirector link, pointing to a URL that appears to be a lure for free PC games. This URL, https://ttraff.cc/pify?keyword=games+for+pc+dolphin+emulator+free, is designed to redirect users to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but point to external PDF files, suggesting an attempt to manipulate search engine results or distribute malicious links.

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=games+for+pc+dolphin+emulator+free
    • http://sobos.brandonssandbox.com/uploads/1/3/1/3/131380600/xozodugakidilaliviwa.pdf
    • http://files.crystalfallstradingco.com/uploads/1/3/1/8/131856271/toxagope.pdf
    • http://zomexolit.svyatiduo.com/uploads/1/3/2/6/132682076/wawelivunu-riluximajopital-simafigele-nepalowenudi.pdf
    • http://files.coldwatersoapco.com/uploads/1/3/1/4/131453081/molilapasirexed.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/lower_explosive_limit_definition.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/29739307721.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/71305661896.pdf
    • https://cdn.shopify.com/s/files/1/0437/3040/3477/files/64656853072.pdf
    • https://cdn.shopify.com/s/files/1/0433/9862/7495/files/xipawopob.pdf
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/81755782799.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/aura_carlos_fuentes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/6719994209.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/71910292928.pdf
    • https://cdn.shopify.com/s/files/1/0440/0496/6565/files/63983403979.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_off0000678a.bin
2f0e2d013472ccf7c9d95ff7d23359b6b440bd8c9f87e3d383357f43fc979fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678A 5428 bytes
font_01_sfnt_off000079dc.bin
e5c2cf0cd67059f46ef3d4d429d6924e91b34c12fc58f2eace129b59ed71a36a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79DC 10580 bytes

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