Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61bc00742c926ad…

MALICIOUS

PDF

51.0 KB Created: 2020-08-04 04:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79744d5d4aaca3e162ed5b46893165db SHA-1: 8d8b80b039c853c5a479c5f52b609aa5bef29278 SHA-256: e61bc00742c926adda7659ff3ac37dea3025afc035227ac18e3fed607cbaa7e4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL and other URLs pointing to what appears to be a link farm designed for SEO manipulation. This suggests a phishing or redirection attack aimed at users searching for information.

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=summary+history+of+computer+pdf
    • http://files.estateart.net/uploads/1/3/1/8/131871894/2acb06.pdf
    • http://dujaxim.selectricartists.com/uploads/1/3/1/4/131438641/9404404.pdf
    • http://files.cbd-wisconsin.com/uploads/1/3/1/1/131163910/9996117.pdf
    • http://files.nataliemariaclark.com/uploads/1/3/1/6/131636954/dawovasun.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/90271627069.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/kuxadapofig.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/96744331059.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/71848793452.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/25781688260.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/jojapelewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4634/6658/files/ginetakefujapitodupixida.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/voboxebifipodorevide.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/89947010457.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/ruwofixofobowigomexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/bipeladepivetudipilibak.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_off000088a8.bin
38843410b441dfca396bb570d2a85466f4cefeb5106f71619160cbbf19bdc9b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A8 5568 bytes
font_01_sfnt_off00009b77.bin
f170539f7e555dfd3e31d33af3e3337bf7d740f54b7acddecbc1858e97c83521		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B77 10504 bytes

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