Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e54bb0153af0c5b…

MALICIOUS

PDF

36.3 KB Created: 2020-08-01 19:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acf182628871ff7857740c27895f14f7 SHA-1: 878c8175c288b01222b0741722421735c4f6b0da SHA-256: 9e54bb0153af0c5b40d020b479f219ac5bccc008569263a7a45a151e92e6cc10
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body contains the phrase 'I want it gif' and a URL, suggesting a lure to a malicious site.

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/pify?keyword=i+want+it+gif
    • http://files.gretchendriscoll.com/uploads/1/3/2/7/132740951/1b04c.pdf
    • http://files.createweddingsandevents.com/uploads/1/3/2/8/132814302/2357313.pdf
    • http://files.wandalaclaire.ca/uploads/1/3/0/7/130740256/4097248.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/91869508271.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0829/files/butoxamozujepagak.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/61341612819.pdf
    • https://cdn.shopify.com/s/files/1/0440/5487/2214/files/82314151516.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/78070291519.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/vubukavujogomefajaras.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/mezuwamexipasozerapore.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/guxemovawuxim.pdf
    • https://cdn.shopify.com/s/files/1/0437/8437/2386/files/mr_boombastic_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/somaturebutez.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/auto_tune_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/bekuvono.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/ponotatejoni.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_off000052db.bin
0ae856e6b028ec023615e50b06192ef54a3b7ad6cf72d9070bc3d54aa10ca991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DB 4660 bytes
font_01_sfnt_off000062e8.bin
66ce7ffa6c6145126751f267e5b8741ace06682cbd73be619721612de4f392b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 9948 bytes

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