PDF malware analysis — malicious · e5b1f084396e8590

MALICIOUS

PDF

47.2 KB Created: 2020-08-01 05:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b94dee731f6e3f8ac135692982370186 SHA-1: 3f7831cbfb728870c33c97e8be63000c7fc19f1c SHA-256: e5b1f084396e8590b32366489f93fe2ba4b046eff16eaa90bde2575ef88e7906

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=tin+cup+soundtrack', which is the primary malicious URL. The ML classifier also strongly indicated maliciousness. The presence of numerous PDF links, many hosted on Shopify, suggests a link-farming or phishing attempt to drive traffic to malicious sites.

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=tin+cup+soundtrack
- http://files.txheartlandins.com/uploads/1/3/0/9/130969148/72095b057f1e3.pdf
- http://files.parttrappers.com/uploads/1/3/1/0/131070651/8c952b0bed1.pdf
- http://files.simoneorriss.com/uploads/1/3/1/3/131379948/09560f75609.pdf
- http://files.lyndsayrice.com/uploads/1/3/1/4/131407274/nurivokilefow.pdf
- https://cdn.shopify.com/s/files/1/0438/2267/8173/files/40069927194.pdf
- https://cdn.shopify.com/s/files/1/0429/8702/8641/files/12961158821.pdf
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/69438551898.pdf
- https://cdn.shopify.com/s/files/1/0434/6000/1957/files/38133875706.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdf
- https://cdn.shopify.com/s/files/1/0433/6418/8312/files/rifidutiteviwepi.pdf
- https://cdn.shopify.com/s/files/1/0433/8499/5991/files/febenemudepumevitosubobov.pdf
- https://cdn.shopify.com/s/files/1/0432/0706/5757/files/kelozaxi.pdf
- https://cdn.shopify.com/s/files/1/0433/8935/4142/files/44001537397.pdf
- https://cdn.shopify.com/s/files/1/0430/7920/5013/files/tumitukagaweburu.pdf
- https://cdn.shopify.com/s/files/1/0434/0298/5626/files/58427128789.pdf
- https://cdn.shopify.com/s/files/1/0431/5666/8573/files/34955363820.pdf
- https://cdn.shopify.com/s/files/1/0431/2717/7380/files/xotovatuwogofenekomikume.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006d6c.bin` `b189aa5013318eec3fb12ad1bb2017cac7cc4bb8b0c53b04b3f6b8a12dc605f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D6C	4812 bytes
`font_01_sfnt_off00007dbd.bin` `208f41b791810ad4036b7152f29004c1dd20c858b1751ea6f35369e3d9a5fcff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DBD	10456 bytes
`font_02_sfnt_off0000a16f.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA16F	4324 bytes

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