Malicious PDF — malware analysis report

Static analysis result for SHA-256 902887de5126b9eb…

MALICIOUS

PDF

46.2 KB Created: 2020-08-21 23:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70f4d66e263ef8467ba112d0b36939ea SHA-1: f5edee3b15f26795ab7dc147218b377a93de254f SHA-256: 902887de5126b9eb9360b093d89cd8b55bbc132ab5153b064adc5485862cbdd0
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body itself contains garbled text but includes the malicious URL, suggesting a lure to entice users to click on the links. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=ardhanarishvara+stotram+in+telugu+pdf'.

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=ardhanarishvara+stotram+in+telugu+pdf
    • http://files.andrewmichaelart.com/uploads/1/3/1/4/131408529/59fa416c9cccb3.pdf
    • http://files.shooplr.com/uploads/1/3/1/1/131164358/negubobudo.pdf
    • http://liramixof.loufitness.co.uk/uploads/1/3/1/4/131409926/65db12a9a116.pdf
    • http://vutuba.royalmarineser.com/uploads/1/3/1/8/131871787/zamazarasa.pdf
    • http://files.grumruns.com/uploads/1/3/1/3/131384249/81d8cef21a7fc.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/15129244705.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/zaxitag.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/gopodifubeki.pdf
    • https://cdn.shopify.com/s/files/1/0434/7379/7284/files/pafalupupavomiwunos.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6918/files/73862133197.pdf
    • https://cdn.shopify.com/s/files/1/0432/8656/0936/files/nitro_pro_to_word_converter_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/bekif.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/xuzixebeke.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/22151261149.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_off00006663.bin
284739ee248120ebd068827aed7b1b872b132d7412b3483a84fbfda369b93257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6663 5504 bytes
font_01_sfnt_off000078f4.bin
53efd872956d0658d50163b2a4af10c49252db5fc179df829769cc7e0fd96d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F4 4060 bytes
font_02_sfnt_off000088af.bin
1724c0987f8fe199b3ed9f67c81d35e818b7b8092c5762b21e3ceae673549ff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88AF 10220 bytes

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