PDF malware analysis — malicious · f9968d3c68183838

MALICIOUS

PDF

43.4 KB Created: 2020-07-29 05:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a611d9d251e1d88d314bd1bc9056e7b0 SHA-1: cbfa1628585f7e0ad6d5e09022ad9390ad5c392b SHA-256: f9968d3c68183838adfe4e6f0ecbe88ba883d828701983a0ce1f206a2c7850d6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm designed to improve search engine ranking or distribute malicious content. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear textual lures.

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.com/pify?keyword=profile.+dat++for+dls+18
- http://files.globecreekcamp.com/uploads/1/3/2/7/132710795/lidinefeki-vuxotuxatugal.pdf
- http://files.warriorartsacademy.net/uploads/1/3/0/8/130874582/bd88ffec3ca9d7d.pdf
- http://files.iamnotmylaundry.com/uploads/1/3/1/4/131437295/rukesewowimotu.pdf
- http://files.englishmadeeasy.es/uploads/1/3/1/6/131637226/3936f482d93ea.pdf
- http://files.baarleproeft.com/uploads/1/3/2/6/132681436/lowamelebo.pdf
- http://files.englishmadeeasy.es/uploads/1/3/1/6/131637226/3936f482d93e
- https://cdn.shopify.com/s/files/1/0436/4809/0270/files/21490543650.pdf
- https://cdn.shopify.com/s/files/1/0432/5048/3368/files/mawizagetujab.pdf
- https://cdn.shopify.com/s/files/1/0432/8236/6629/files/gulugi.pdf
- https://cdn.shopify.com/s/files/1/0438/9139/2664/files/pupoxinojefadikalaxa.pdf
- https://cdn.shopify.com/s/files/1/0434/6567/0806/files/zadiwi.pdf
- https://cdn.shopify.com/s/files/1/0431/0378/1015/files/78045718706.pdf
- https://cdn.shopify.com/s/files/1/0432/1456/9640/files/11364938158.pdf
- https://cdn.shopify.com/s/files/1/0440/2970/6390/files/lejap.pdf
- https://cdn.shopify.com/s/files/1/0434/4925/4041/files/kokilejobapili.pdf
- https://cdn.shopify.com/s/files/1/0432/5936/3483/files/tekedefasom.pdf
- https://cdn.shopify.com/s/files/1/0428/7276/6631/files/dagebubasufi.pdf
- https://cdn.shopify.com/s/files/1/0432/8089/2057/files/turox.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006c37.bin` `6d6d89258da42048df7b1797855736213f5c0b03133944ddff986b85e9ee3791`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C37	4864 bytes
`font_01_sfnt_off00007cd1.bin` `c57f7609e10cc897324e3d7a93f958bbf062dd237885aa5a8500ac1106629772`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CD1	10360 bytes

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