Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96204edce08720f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-30 13:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aee6eed4ec55a10d751d5c3a182e1e15 SHA-1: fb3c381752511779ac2f71d080924b0b7e325e6e SHA-256: d96204edce08720f711a039c519657b786ad484700f2939a791f7ed5184a9212
150 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Maze runner book cover' and the malicious URL, suggesting a social engineering lure. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=maze+runner+book+cover
    • https://cdn.shopify.com/s/files/1/0431/6440/1818/files/54738424699.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/89753478405.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/38256575107.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/makelokiberitamud.pdf
    • https://cdn.shopify.com/s/files/1/0433/5081/8981/files/kusobelixulipuxegutos.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/28158218814.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/rezibaxoxemif.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/universal_antidote.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/data_warehouse_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/dawis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/navoboj.pdf
    • https://cdn.shopify.com/s/files/1/0436/9678/3514/files/advantages_and_disadvantages_of_multilingualism.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4955/files/luxewamar.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/disebunukumadolotajuraga.pdf
    • https://cdn.shopify.com/s/files/1/0430/2697/2825/files/73308159747.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_1bb047a101ed4ec2a4393750e60032cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_794924bd2501441fa6219088ae1e30bc.pdf
    • https://static.usrfiles.com/ugd/4f270c_eb41c1d2192546cb9444c68d06cb413b.pdf
    • https://static.usrfiles.com/ugd/74a852_36359d97ae3947f6b378e0a7939d9cdb.pdf
    • https://static.usrfiles.com/ugd/b8c837_e41db60785a940b79d36a42069d4c010.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_off000073a4.bin
5ca8b0acfbcf69bf368d0a5bda8baf9eeeb2881b5e2421bf563295a3d6122fd7
pdf-font-stream PDF embedded font (sfnt) at offset 0x73A4 4900 bytes
font_01_sfnt_off00008476.bin
88f08c0241ad01991e069b5c457b682f7463e4d28a57a618db833e9e551a0e53
pdf-font-stream PDF embedded font (sfnt) at offset 0x8476 10348 bytes