Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1516b1dc50a146…

MALICIOUS

PDF

69.4 KB Created: 2020-08-07 07:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff2311f11fd3ad7ce3d245d4c01ea25c SHA-1: 7c67a0d97a5a2e35e56d063d38c60676be1657e7 SHA-256: 9d1516b1dc50a1469e985c7381d67a7dec5e3b11093a43986c1bf27aaddb0f98
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 of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.cc/pify?keyword=eikon+basilike+pdf, which is likely used to redirect users to further malicious content. No scripts were extracted from this sample.

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=eikon+basilike+pdf
    • http://xelul.preciousjewelstylz.com/uploads/1/3/2/3/132303338/kofugemovi.pdf
    • http://files.daveevardson.com/uploads/1/3/0/9/130969558/rulifabirapuxiraf.pdf
    • http://files.royalsiammoraga.com/uploads/1/3/1/8/131856619/6529768.pdf
    • http://files.wheelmanspokane.com/uploads/1/3/0/8/130814706/rubotopo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/rofikoxan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdf
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/67021288162.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/nefevoxibuzudebeditituxiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3823/5031/files/milejopilafazikababatala.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/jigalisufutigulumeke.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/83240448238.pdf
    • https://cdn.shopify.com/s/files/1/0430/7052/1495/files/didusakejapil.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/36264820926.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_off0000d4c0.bin
f7cf32414441caadb1ab6429cd641e6221f6fd6adcd86c8ee944ea65b5bf454c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C0 5100 bytes
font_01_sfnt_off0000e632.bin
9cb8fb586a960b33f138c58b2e8b29dad07c6a3c8843d22587bd788af412a6d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE632 10124 bytes

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