Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a7120ba25acada…

MALICIOUS

PDF

50.8 KB Created: 2020-08-06 20:22:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 923969f0ab2d9a2fbfdac5f87b7f40ba SHA-1: 3cc96509e16b6f7178d720a9e83d12446bad3c2f SHA-256: 92a7120ba25acada2183cdd20cffc3712e65e6e925cbbae9670366feb3195dc6
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=blades+in+the+dark+pdf+portugues+download'. Additionally, it exhibits a link farm behavior, embedding numerous links to other PDFs, many hosted on Shopify. The document body text and embedded links suggest a lure for downloading content, likely malicious, under the guise of a PDF download. No scripts were extracted, limiting further analysis of payload delivery.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=blades+in+the+dark+pdf+portugues+download
    • http://files.genevieve-faulkner.com/uploads/1/3/0/7/130775528/329717f268e934b.pdf
    • http://files.gapviewkennel.com/uploads/1/3/1/3/131381553/guvif-lizeketo-nofixatazakeraf.pdf
    • http://files.rvabookloversfestival.com/uploads/1/3/0/8/130873794/godijomapiwi_jumopus_pefafipo_tuvelizub.pdf
    • http://files.gkcphotography.com/uploads/1/3/1/4/131438741/8698267.pdf
    • http://files.lustfullashesbykendal.com.au/uploads/1/3/0/9/130969855/5129524.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/tamesemekalekefeb.pdf
    • https://cdn.shopify.com/s/files/1/0435/3294/3519/files/jebefugazoro.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/21194901489.pdf
    • https://cdn.shopify.com/s/files/1/0440/6480/0918/files/68257917244.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9751/files/simple_personal_budget_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/79262751113.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/29346156897.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/34955363820.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/gujurarogorazizedebapela.pdf
    • https://cdn.shopify.com/s/files/1/0429/2008/3612/files/tukotetofapezuveg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.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_off000071dd.bin
3b956f8c39ca319b3452c62f22aab8fc27fa5fdbc8616e61b957742508f11119		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DD 5508 bytes
font_01_sfnt_off000084aa.bin
1577cc21246972b044b934b91df29e26a4d73a886cfe0c16bf00d437bf41557d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84AA 10448 bytes
font_02_sfnt_off0000a7d5.bin
ee51351c9eb8c6a9dbff1bb743467f39bbaa64eee970481c040e8f02c1ffc4b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D5 16340 bytes

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