Malicious PDF — malware analysis report

Static analysis result for SHA-256 9301938fca8f48da…

MALICIOUS

PDF

44.4 KB Created: 2020-07-30 15:10:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae0fa2e09f215a9fbd8b06a1bf016b8f SHA-1: e3e2429466f23a5995750d12678f2cc847a38ea9 SHA-256: 9301938fca8f48da9d183e46afab8fbcee4d73ca1c36d489ea38be088426a756
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=statistical+demography+and+forecasting+pdf', points to known malicious redirector infrastructure. The presence of numerous links suggests an attempt to manipulate search engine results or to distribute additional 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/pify?keyword=statistical+demography+and+forecasting+pdf
    • http://files.rickkeyesmusiccaravan.com/uploads/1/3/0/8/130813732/reziwepujemoxirojem.pdf
    • http://files.mastersveterinaryservice.com/uploads/1/3/1/4/131437669/rezodogiwove-junadorexawedez.pdf
    • http://files.athomedogeuthanasia.com/uploads/1/3/0/8/130815115/8236f5400166a.pdf
    • http://files.ath
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/vewemazovufezonomovesamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8506/1541/files/xuwulimapid.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/12600412880.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/dabozufa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/64762232790.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/530429926.pdf
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/68742097456.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/nerokexew.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/razoxusitafibumed.pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/8715261824.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/60165781179.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/xelunuribotipogimot.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/91963591082.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_off00006f47.bin
06b89ce2218e1d8c09ec44710554856bfed52af49d9cc27475689e6f09404944		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F47 5564 bytes
font_01_sfnt_off000081ff.bin
837483826d06fa49fec0008b36c1a2b5222273912a71d219c1319d326f2ef50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81FF 10124 bytes

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