Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66615eb5ce2471c…

MALICIOUS

PDF

70.6 KB Created: 2020-08-15 16:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab7d47b7b57a36afdb22b021869ce984 SHA-1: aca21d7f264647fdee4e365615028337c1e9c813 SHA-256: c66615eb5ce2471c51cc8b584eb7b90c9f8ea1faa79376ca41cbb631abdfa170
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to ttraff.ru. This URL is associated with known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also hosts a large number of links, many pointing to Shopify domains, likely as part of a link farm to improve SEO for malicious content.

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/wb?keyword=practical%20criticism%20of%20poetry%20pdf
    • http://files.kn-pilates.com/uploads/1/3/1/4/131483002/gagotadufimutazu.pdf
    • http://files.adamolsenphoto.com/uploads/1/3/0/7/130775506/mofomatuto_joxuzesiran_vumevomelura.pdf
    • http://nesezum.storyshack.org/uploads/1/3/0/8/130873995/fufogumanofi.pdf
    • http://files.theglasscarousel.com/uploads/1/3/2/3/132303270/9013606.pdf
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/41092971071.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/34625526458.pdf
    • https://cdn.shopify.com/s/files/1/0440/5487/2214/files/pawosupobatil.pdf
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/75004091428.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/81007556852.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0959/files/ue_boom_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/4669/8146/files/agudas_llanas_y_esdrujulas_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/zuzabekofemofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/pemobezav.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5240/files/xaxetaxeki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/1317854922.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6cd.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6CD 2828 bytes
font_01_sfnt_off0000d0c7.bin
e7fc9b73432ee4cfd8b962bb3389af3e4926330f1f86233ef701f9fa75677d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C7 5404 bytes
font_02_sfnt_off0000e30d.bin
eaf44ff431d187adb50c5a85519f864045c70e3d0aa2a85da8ea413df2f1d526		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE30D 13000 bytes

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