Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f30f7feea0bf237…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 05:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c06e864c1fded9748bf971feb439ac7 SHA-1: ef77e51ff6be81e2691ffe66373583c69d3553ac SHA-256: 7f30f7feea0bf2374720e3958185a7ff69ef3393ebde876b5eda22acb79c449f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting a coordinated effort to distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=aranto+cancer+pdf, which likely serves as a gateway to further malicious sites or payloads.

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/pify?keyword=aranto+cancer+pdf
    • http://files.steppingstoneshypnosis.com/uploads/1/3/1/3/131383575/sevixe.pdf
    • http://files.kidsonup.com/uploads/1/3/1/4/131407135/544270.pdf
    • http://files.chez-fert-gite.com/uploads/1/3/1/6/131636984/noluniril_bimawu_solozifuz_tavuziloxi.pdf
    • http://files.supportingsuperstudents.org/uploads/1/3/1/6/131636702/766eff17f.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/ruwonidepekivaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0225/files/gojipunekadidevaroxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/ruwokanisululitebezufirir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/23394910362.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/ct_file_candy.pdf
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/maruti_800_carburetor_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/gente_toxica_stamateas.pdf
    • https://cdn.shopify.com/s/files/1/0437/2371/8824/files/20063333929.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/definition_of_noun_phrase.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/on_the_road_again_guitar_tab.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_off00006665.bin
65f6ee7482931e9f025275e92579de3003d32526a3b3b535e2e8db38d88a6cb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 4928 bytes
font_01_sfnt_off0000773c.bin
82cb59a0ab088d4039e64e067c1272adf556d3c3f01db20c77363303633e6910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773C 10916 bytes

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