PDF malware analysis — malicious · ec1e5e39e95eccdc

MALICIOUS

PDF

36.9 KB Created: 2020-08-03 23:27:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 96f2719c7d323e6296d09e5b37ece03d SHA-1: 291285740aff8317656f212060a22776985f678d SHA-256: ec1e5e39e95eccdccd08cf2386a30120a9103f174cad4136f46824df8b4bbb95

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a pattern of hosting malicious content on seemingly benign platforms like Shopify. The ML classifier also strongly flagged this PDF as malicious. The primary malicious URL identified is https://ttraff.ru/pify?keyword=coordinate+plane+notes+pdf, which likely serves as a lure to download further 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=coordinate+plane+notes+pdf
- http://files.elbareview.com/uploads/1/3/0/9/130969370/botupeseseko-timuvevo-lojibegodaxa-vawomir.pdf
- http://files.bcahope.com/uploads/1/3/1/4/131407080/zopafoxin.pdf
- http://files.midsomersetmartialarts.com/uploads/1/3/1/8/131856186/e4681535.pdf
- http://files.mantleofelijah.org/uploads/1/3/2/6/132680890/jeruwosogar_setizuvewes_gigudo_nexusazu.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/pibinapolefopetexilovatag.pdf
- https://cdn.shopify.com/s/files/1/0430/1747/0101/files/31111771139.pdf
- https://cdn.shopify.com/s/files/1/0439/3913/5643/files/jugiwaralamifozosupivedat.pdf
- https://cdn.shopify.com/s/files/1/0438/4620/5602/files/22834399388.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2687/files/82319261354.pdf
- https://cdn.shopify.com/s/files/1/0431/9464/6688/files/10505432040.pdf
- https://cdn.shopify.com/s/files/1/0436/2944/5273/files/bikosupesanazasa.pdf
- https://cdn.shopify.com/s/files/1/0432/2046/7869/files/litepekow.pdf
- https://cdn.shopify.com/s/files/1/0433/5593/0783/files/kutijejezafefufa.pdf
- https://cdn.shopify.com/s/files/1/0427/5650/5756/files/39537946845.pdf
- https://cdn.shopify.com/s/files/1/0434/3886/6593/files/gejora.pdf
- https://cdn.shopify.com/s/files/1/0434/5112/1820/files/69850766687.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/
- https://cdn.shopify.com/s/files/1/0

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000053c5.bin` `33e0fe904fee7186b38921edac7a4eb810491f263d18ea1bf6142621b7c09927`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x53C5	4940 bytes
`font_01_sfnt_off0000649a.bin` `8782103d1486ac9155a656ac4041159919659e76a052093adc6e8ea7f79dc315`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x649A	9912 bytes

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