Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6a6c05202f29bb…

MALICIOUS

PDF

33.6 KB Created: 2020-08-17 18:38:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1865776c0ec6ff434989a23039fab49 SHA-1: e322a42a5e7a922e1ac71df30f880a7295513169 SHA-256: df6a6c05202f29bbbb440704642a74716b4ffd41ef153922479e152c8bf8ec9b
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links pointing to other PDF files, many hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=http%252F%252F+0.+facebook.+com', is flagged as a malicious redirector. This suggests a campaign to distribute malicious content or engage in SEO manipulation. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=http%252F%252F+0.+facebook.+com
    • http://rebikeged.irenelopezphd.com/uploads/1/3/2/6/132682883/3411243.pdf
    • http://totegoxos.artforalz.us/uploads/1/3/1/6/131637814/xepamew.pdf
    • http://files.630shistory.com/uploads/1/3/2/7/132710697/6010257.pdf
    • https://cdn.shopify.com/s/files/1/0446/0973/2771/files/physiology_of_lactation_in_humans.pdf
    • https://cdn.shopify.com/s/files/1/0431/8068/7520/files/rijamobulikodapubosi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/16738175222.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/39124326787.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/bizizoroxisoxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/99708912782.pdf
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/82931725598.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/tejun.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/tally_voucher_entry_file.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_off0000465a.bin
e1d5445111bd5e8de7004ed211c87e1fd05af2ce50e6946a590231b566f4f2c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x465A 5232 bytes
font_01_sfnt_off0000581b.bin
95eb5a43b8e303651ce340a6eb4820b47f2f71624d02c0794c0af78505037aa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x581B 9980 bytes

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