PDF malware analysis — malicious · c0200e55a81b6d18

MALICIOUS

PDF

47.8 KB Created: 2020-07-29 04:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bdba81f3c4a6f9938c0d536d7f37223e SHA-1: 383269d69bcb352d3781f170e245153f0359371f SHA-256: c0200e55a81b6d183808126ea306bb5d75112cff6f9b0aabeec1ed046c12a7e9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'assessing information'. The presence of a large number of external PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted from this sample.

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=definition+of+assessing+information
- http://files.durablecaster.com.tw/uploads/1/3/1/8/131856279/dedawujuk_zowamemopijifu.pdf
- http://files.melbournecarspotters.com/uploads/1/3/0/8/130873820/masemudi-gozew.pdf
- http://files.secondhalfathletes.com/uploads/1/3/0/8/130874524/setebefofixog.pdf
- http://files.nyssacity.org/uploads/1/3/1/6/131637308/f4e161f9024f418.pdf
- http://files.wrenshallab.com/uploads/1/3/0/7/130775735/98432.pdf
- http://files.melbournecarspotte
- https://cdn.shopify.com/s/files/1/0431/2875/0234/files/96858680227.pdf
- https://cdn.shopify.com/s/files/1/0430/4211/1650/files/xiwaxezawapubaku.pdf
- https://cdn.shopify.com/s/files/1/0430/9060/8285/files/30378426764.pdf
- https://cdn.shopify.com/s/files/1/0430/1992/7713/files/wivepine.pdf
- https://cdn.shopify.com/s/files/1/0435/4310/1591/files/46631119165.pdf
- https://cdn.shopify.com/s/files/1/0437/3816/9498/files/42975187687.pdf
- https://cdn.shopify.com/s/files/1/0431/8052/3678/files/bafovebu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
- https://cdn.shopify.com/s/files/1/0427/9091/2159/files/jekovegodenovotujuxe.pdf
- https://cdn.shopify.com/s/files/1/0434/3257/5132/files/21840998665.pdf
- https://cdn.shopify.com/s/files/1/0433/6153/4111/files/ditajik.pdf
- https://cdn.shopify.com/s/files/1/0439/4736/0424/files/30106995561.pdf
- https://cdn.shopify.com/s/files/1/0438/5597/0464/files/24344859705.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_off00007f2b.bin` `e4588cc99c490e9117d904fa2c25bedba3f2962eb081afa0abfd52d1004ce6f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F2B	4844 bytes
`font_01_sfnt_off00008f84.bin` `f9fc747e34441eafa3143103b4d584bb60f02e0f12a1ee4345a49c5a459d3e57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F84	9992 bytes

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